Convert.ToString Convert.ToString Convert.ToString Convert.ToString Method

Définition

Convertit la valeur spécifiée en sa représentation sous forme de chaîne équivalente.Converts the specified value to its equivalent string representation.

Surcharges

ToString(Int16, Int32) ToString(Int16, Int32) ToString(Int16, Int32) ToString(Int16, Int32)

Convertit la valeur d'un entier signé 16 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of a 16-bit signed integer to its equivalent string representation in a specified base.

ToString(Int16, IFormatProvider) ToString(Int16, IFormatProvider) ToString(Int16, IFormatProvider) ToString(Int16, IFormatProvider)

Convertit la valeur de l'entier signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 16-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(UInt64, IFormatProvider) ToString(UInt64, IFormatProvider) ToString(UInt64, IFormatProvider) ToString(UInt64, IFormatProvider)

Convertit la valeur de l'entier non signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 64-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Decimal, IFormatProvider) ToString(Decimal, IFormatProvider) ToString(Decimal, IFormatProvider) ToString(Decimal, IFormatProvider)

Convertit la valeur du nombre décimal spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified decimal number to its equivalent string representation, using the specified culture-specific formatting information.

ToString(DateTime, IFormatProvider) ToString(DateTime, IFormatProvider) ToString(DateTime, IFormatProvider) ToString(DateTime, IFormatProvider)

Convertit la valeur du DateTime spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified DateTime to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Int32, IFormatProvider) ToString(Int32, IFormatProvider) ToString(Int32, IFormatProvider) ToString(Int32, IFormatProvider)

Convertit la valeur de l'entier signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 32-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Double, IFormatProvider) ToString(Double, IFormatProvider) ToString(Double, IFormatProvider) ToString(Double, IFormatProvider)

Convertit la valeur du nombre à virgule flottante double précision spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified double-precision floating-point number to its equivalent string representation.

ToString(Int32, Int32) ToString(Int32, Int32) ToString(Int32, Int32) ToString(Int32, Int32)

Convertit la valeur d'un entier signé 32 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of a 32-bit signed integer to its equivalent string representation in a specified base.

ToString(SByte, IFormatProvider) ToString(SByte, IFormatProvider) ToString(SByte, IFormatProvider) ToString(SByte, IFormatProvider)

Convertit la valeur de l'entier signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 8-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Int64, Int32) ToString(Int64, Int32) ToString(Int64, Int32) ToString(Int64, Int32)

Convertit la valeur d'un entier signé 64 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of a 64-bit signed integer to its equivalent string representation in a specified base.

ToString(Object, IFormatProvider) ToString(Object, IFormatProvider) ToString(Object, IFormatProvider) ToString(Object, IFormatProvider)

Convertit la valeur de l'objet spécifié en représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified object to its equivalent string representation using the specified culture-specific formatting information.

ToString(Single, IFormatProvider) ToString(Single, IFormatProvider) ToString(Single, IFormatProvider) ToString(Single, IFormatProvider)

Convertit la valeur du nombre à virgule flottante simple précision spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified single-precision floating-point number to its equivalent string representation, using the specified culture-specific formatting information.

ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider)

Retourne l'instance de chaîne spécifiée. Aucune conversion n'est effectuée.Returns the specified string instance; no actual conversion is performed.

ToString(UInt16, IFormatProvider) ToString(UInt16, IFormatProvider) ToString(UInt16, IFormatProvider) ToString(UInt16, IFormatProvider)

Convertit la valeur de l'entier non signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 16-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(UInt32, IFormatProvider) ToString(UInt32, IFormatProvider) ToString(UInt32, IFormatProvider) ToString(UInt32, IFormatProvider)

Convertit la valeur de l'entier non signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 32-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Char, IFormatProvider) ToString(Char, IFormatProvider) ToString(Char, IFormatProvider) ToString(Char, IFormatProvider)

Convertit la valeur du caractère Unicode spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified Unicode character to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Int64, IFormatProvider) ToString(Int64, IFormatProvider) ToString(Int64, IFormatProvider) ToString(Int64, IFormatProvider)

Convertit la valeur de l'entier signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 64-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Byte, Int32) ToString(Byte, Int32) ToString(Byte, Int32) ToString(Byte, Int32)

Convertit la valeur d'un entier non signé 8 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of an 8-bit unsigned integer to its equivalent string representation in a specified base.

ToString(UInt64) ToString(UInt64) ToString(UInt64) ToString(UInt64)

Convertit la valeur de l'entier non signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 64-bit unsigned integer to its equivalent string representation.

ToString(Boolean, IFormatProvider) ToString(Boolean, IFormatProvider) ToString(Boolean, IFormatProvider) ToString(Boolean, IFormatProvider)

Convertit la valeur booléenne spécifiée en sa représentation sous forme de chaîne équivalente.Converts the specified Boolean value to its equivalent string representation.

ToString(Byte, IFormatProvider) ToString(Byte, IFormatProvider) ToString(Byte, IFormatProvider) ToString(Byte, IFormatProvider)

Convertit la valeur de l'entier non signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 8-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

ToString(Boolean) ToString(Boolean) ToString(Boolean) ToString(Boolean)

Convertit la valeur booléenne spécifiée en sa représentation sous forme de chaîne équivalente.Converts the specified Boolean value to its equivalent string representation.

ToString(Byte) ToString(Byte) ToString(Byte) ToString(Byte)

Convertit la valeur de l'entier non signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 8-bit unsigned integer to its equivalent string representation.

ToString(Char) ToString(Char) ToString(Char) ToString(Char)

Convertit la valeur du caractère Unicode spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified Unicode character to its equivalent string representation.

ToString(Decimal) ToString(Decimal) ToString(Decimal) ToString(Decimal)

Convertit la valeur du nombre décimal spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified decimal number to its equivalent string representation.

ToString(Double) ToString(Double) ToString(Double) ToString(Double)

Convertit la valeur du nombre à virgule flottante double précision spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified double-precision floating-point number to its equivalent string representation.

ToString(Int16) ToString(Int16) ToString(Int16) ToString(Int16)

Convertit la valeur de l'entier signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 16-bit signed integer to its equivalent string representation.

ToString(DateTime) ToString(DateTime) ToString(DateTime) ToString(DateTime)

Convertit la valeur du DateTime spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified DateTime to its equivalent string representation.

ToString(Int64) ToString(Int64) ToString(Int64) ToString(Int64)

Convertit la valeur de l'entier signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 64-bit signed integer to its equivalent string representation.

ToString(Object) ToString(Object) ToString(Object) ToString(Object)

Convertit la valeur de l'objet spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified object to its equivalent string representation.

ToString(SByte) ToString(SByte) ToString(SByte) ToString(SByte)

Convertit la valeur de l'entier signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 8-bit signed integer to its equivalent string representation.

ToString(Single) ToString(Single) ToString(Single) ToString(Single)

Convertit la valeur du nombre à virgule flottante simple précision spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified single-precision floating-point number to its equivalent string representation.

ToString(String) ToString(String) ToString(String) ToString(String)

Retourne l'instance de chaîne spécifiée. Aucune conversion n'est effectuée.Returns the specified string instance; no actual conversion is performed.

ToString(UInt16) ToString(UInt16) ToString(UInt16) ToString(UInt16)

Convertit la valeur de l'entier non signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 16-bit unsigned integer to its equivalent string representation.

ToString(UInt32) ToString(UInt32) ToString(UInt32) ToString(UInt32)

Convertit la valeur de l'entier non signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 32-bit unsigned integer to its equivalent string representation.

ToString(Int32) ToString(Int32) ToString(Int32) ToString(Int32)

Convertit la valeur de l'entier signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 32-bit signed integer to its equivalent string representation.

ToString(Int16, Int32) ToString(Int16, Int32) ToString(Int16, Int32) ToString(Int16, Int32)

Convertit la valeur d'un entier signé 16 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of a 16-bit signed integer to its equivalent string representation in a specified base.

public:
 static System::String ^ ToString(short value, int toBase);
public static string ToString (short value, int toBase);
static member ToString : int16 * int -> string
Public Shared Function ToString (value As Short, toBase As Integer) As String

Paramètres

value
Int16 Int16 Int16 Int16

Entier signé 16 bits à convertir.The 16-bit signed integer to convert.

toBase
Int32 Int32 Int32 Int32

Base de la valeur de retour, qui doit être 2, 8, 10 ou 16.The base of the return value, which must be 2, 8, 10, or 16.

Retours

Représentation sous forme de chaîne de value en base toBase.The string representation of value in base toBase.

Exceptions

toBase n’a pas la valeur 2, 8, 10 ou 16.toBase is not 2, 8, 10, or 16.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers 16 bits signés en sa représentation sous forme de chaîne binaire, octale, décimale et hexadécimale équivalente.The following example converts each element in an array of 16-bit signed integers to its equivalent binary, octal, decimal, and hexadecimal string representations.

int[] bases = { 2, 8, 10, 16};
short[] numbers = { Int16.MinValue, -13621, -18, 12, 19142, Int16.MaxValue };

foreach (int baseValue in bases)
{
   Console.WriteLine("Base {0} conversion:", baseValue);
   foreach (short number in numbers)
   {
      Console.WriteLine("   {0,-8}  -->  0x{1}", 
                        number, Convert.ToString(number, baseValue));
   }
}
// The example displays the following output:
//       Base 2 conversion:
//          -32768    -->  0x1000000000000000
//          -13621    -->  0x1100101011001011
//          -18       -->  0x1111111111101110
//          12        -->  0x1100
//          19142     -->  0x100101011000110
//          32767     -->  0x111111111111111
//       Base 8 conversion:
//          -32768    -->  0x100000
//          -13621    -->  0x145313
//          -18       -->  0x177756
//          12        -->  0x14
//          19142     -->  0x45306
//          32767     -->  0x77777
//       Base 10 conversion:
//          -32768    -->  0x-32768
//          -13621    -->  0x-13621
//          -18       -->  0x-18
//          12        -->  0x12
//          19142     -->  0x19142
//          32767     -->  0x32767
//       Base 16 conversion:
//          -32768    -->  0x8000
//          -13621    -->  0xcacb
//          -18       -->  0xffee
//          12        -->  0xc
//          19142     -->  0x4ac6
//          32767     -->  0x7fff
Dim bases() As Integer = { 2, 8, 10, 16}
Dim numbers() As Short = { Int16.MinValue, -13621, -18, 12, 19142, _
                           Int16.MaxValue }

For Each base As Integer In bases
   Console.WriteLine("Base {0} conversion:", base)
   For Each number As Short In numbers
      Console.WriteLine("   {0,-8}  -->  0x{1}", _
                        number, Convert.ToString(number, base))
   Next
Next
' The example displays the following output:
'       Base 2 conversion:
'          -32768    -->  0x1000000000000000
'          -13621    -->  0x1100101011001011
'          -18       -->  0x1111111111101110
'          12        -->  0x1100
'          19142     -->  0x100101011000110
'          32767     -->  0x111111111111111
'       Base 8 conversion:
'          -32768    -->  0x100000
'          -13621    -->  0x145313
'          -18       -->  0x177756
'          12        -->  0x14
'          19142     -->  0x45306
'          32767     -->  0x77777
'       Base 10 conversion:
'          -32768    -->  0x-32768
'          -13621    -->  0x-13621
'          -18       -->  0x-18
'          12        -->  0x12
'          19142     -->  0x19142
'          32767     -->  0x32767
'       Base 16 conversion:
'          -32768    -->  0x8000
'          -13621    -->  0xcacb
'          -18       -->  0xffee
'          12        -->  0xc
'          19142     -->  0x4ac6
'          32767     -->  0x7fff
let bases = [2; 8; 10; 16]
let numbers = [ Int16.MinValue; -13621s; -18s; 12s; 19142s; Int16.MaxValue ]

for baseValue in bases do
    printfn "Base %i conversion:" baseValue
    for number in numbers do
        printfn "   % -8i  -->  0x%s" number (Convert.ToString (number, baseValue))
// The example displays the following output:
//     Base 2 conversion:
//        -32768    -->  0x1000000000000000
//        -13621    -->  0x1100101011001011
//        -18       -->  0x1111111111101110
//         12       -->  0x1100
//         19142    -->  0x100101011000110
//         32767    -->  0x111111111111111
//     Base 8 conversion:
//        -32768    -->  0x100000
//        -13621    -->  0x145313
//        -18       -->  0x177756
//         12       -->  0x14
//         19142    -->  0x45306
//         32767    -->  0x77777
//     Base 10 conversion:
//        -32768    -->  0x-32768
//        -13621    -->  0x-13621
//        -18       -->  0x-18
//         12       -->  0x12
//         19142    -->  0x19142
//         32767    -->  0x32767
//     Base 16 conversion:
//        -32768    -->  0x8000
//        -13621    -->  0xcacb
//        -18       -->  0xffee
//         12       -->  0xc
//         19142    -->  0x4ac6
//         32767    -->  0x7fff

Remarques

Si value est positif et toBase est 2, 8 ou 16, la chaîne retournée utilise la représentation de signe et d’amplitude.If value is positive and toBase is 2, 8, or 16, the returned string uses sign-and-magnitude representation. Si value est négatif et toBase est 2, 8 ou 16, la chaîne retournée utilise la représentation de complément à deux.If value is negative and toBase is 2, 8, or 16, the returned string uses two's complement representation. Cela signifie que le bit de poids fort de l’octet de poids fort (bit 15) est interprété comme le bit de signe.This means that the high-order bit of the high-order byte (bit 15) is interpreted as the sign bit. Si la ToString(Int16, Int32) méthode est appelée pour créer une chaîne qui sera ensuite reconvertie en nombre, une méthode correspondante qui suppose une représentation numérique similaire doit être appelée pour effectuer la conversion.If the ToString(Int16, Int32) method is called to create a string that will later be converted back to a number, a corresponding method that assumes a similar numeric representation should be called to perform the conversion. Ces méthodes incluent Convert.ToInt16(String, Int32) et Int16.Parse(String, NumberStyles).Such methods include Convert.ToInt16(String, Int32) and Int16.Parse(String, NumberStyles).

ToString(Int16, IFormatProvider) ToString(Int16, IFormatProvider) ToString(Int16, IFormatProvider) ToString(Int16, IFormatProvider)

Convertit la valeur de l'entier signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 16-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(short value, IFormatProvider ^ provider);
public static string ToString (short value, IFormatProvider provider);
static member ToString : int16 * IFormatProvider -> string
Public Shared Function ToString (value As Short, provider As IFormatProvider) As String

Paramètres

value
Int16 Int16 Int16 Int16

Entier signé 16 bits à convertir.The 16-bit signed integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la ToString(Int16, IFormatProvider) méthode pour convertir chaque élément d’un tableau d’entiers 16 bits en sa représentation sous forme de chaîne équivalente.It then calls the ToString(Int16, IFormatProvider) method to convert each element in an array of 16-bit integers to its equivalent string representation. La conversion utilise la culture dite indifférente, ainsi que NumberFormatInfo l’objet personnalisé.The conversion uses the invariant culture as well as the custom NumberFormatInfo object.

short[] numbers = { Int16.MinValue, Int16.MaxValue};
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

foreach (short number in numbers)
   Console.WriteLine("{0,-8}  -->  {1,8}", 
                     Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), 
                     Convert.ToString(number, nfi));
// The example displays the following output:
//       -32768    -->    ~32768
//       32767     -->     32767
Dim numbers() As Short = { Int16.MinValue, Int16.MaxValue}
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"

For Each number As Short In numbers
   Console.WriteLine("{0,-8}  -->  {1,8}", _
                     Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), _
                     Convert.ToString(number, nfi))
Next
' The example displays the following output:
'       -32768    -->    ~32768
'       32767     -->     32767

Remarques

Cette implémentation est identique à Int16.ToString(IFormatProvider).This implementation is identical to Int16.ToString(IFormatProvider).

ToString(UInt64, IFormatProvider) ToString(UInt64, IFormatProvider) ToString(UInt64, IFormatProvider) ToString(UInt64, IFormatProvider)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 64-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::UInt64 value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static string ToString (ulong value, IFormatProvider provider);
static member ToString : uint64 * IFormatProvider -> string
Public Shared Function ToString (value As ULong, provider As IFormatProvider) As String

Paramètres

value
UInt64 UInt64 UInt64 UInt64

Entier non signé 64 bits à convertir.The 64-bit unsigned integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la ToString(UInt64, IFormatProvider) méthode pour convertir une valeur d’entier long non signé en sa représentation sous forme de chaîne équivalente.It then calls the ToString(UInt64, IFormatProvider) method to convert an unsigned long integer value to its equivalent string representation. La conversion utilise à la fois la culture dite indifférente et l’objet personnalisé NumberFormatInfo .The conversion uses both the invariant culture and the custom NumberFormatInfo object. La sortie indique que ces informations de mise en forme ne sont pas utilisées car, par défaut, le spécificateur de format "G" n’inclut pas de signe positif avec des valeurs positives.The output indicates that this formatting information is not used, because by default the "G" format specifier does not include a positive sign with positive values.

ulong number = UInt64.MaxValue;
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

Console.WriteLine("{0,-12}  -->  {1,12}",
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture),
                  Convert.ToString(number, nfi));
// The example displays the following output:
//    18446744073709551615  -->  18446744073709551615
Dim number As ULong = UInt64.MaxValue
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"

Console.WriteLine("{0,-12}  -->  {1,12}", _
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), _
                  Convert.ToString(number, nfi))
' The example displays the following output:
'    18446744073709551615  -->  18446744073709551615

Remarques

Cette implémentation est identique à UInt64.ToString(IFormatProvider).This implementation is identical to UInt64.ToString(IFormatProvider).

ToString(Decimal, IFormatProvider) ToString(Decimal, IFormatProvider) ToString(Decimal, IFormatProvider) ToString(Decimal, IFormatProvider)

Convertit la valeur du nombre décimal spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified decimal number to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::Decimal value, IFormatProvider ^ provider);
public static string ToString (decimal value, IFormatProvider provider);
static member ToString : decimal * IFormatProvider -> string
Public Shared Function ToString (value As Decimal, provider As IFormatProvider) As String

Paramètres

value
Decimal Decimal Decimal Decimal

Nombre décimal à convertir.The decimal number to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau Decimal de valeurs en sa représentation sous forme de chaîne équivalente dans quatre cultures différentes.The following example converts each element in an array of Decimal values to its equivalent string representation in four different cultures.

// Define an array of numbers to display.
decimal[] numbers = { 1734231911290.16m, -17394.32921m,
                      3193.23m, 98012368321.684m };
// Define the culture names used to display them.
string[] cultureNames = { "en-US", "fr-FR", "ja-JP", "ru-RU" };

foreach (decimal number in numbers)
{
   Console.WriteLine("{0}:", Convert.ToString(number,
                             System.Globalization.CultureInfo.InvariantCulture));
   foreach (string cultureName in cultureNames)
   {
      System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);
      Console.WriteLine("   {0}: {1,20}",
                        culture.Name, Convert.ToString(number, culture));
   }
   Console.WriteLine();
}   
// The example displays the following output:
//    1734231911290.16:
//       en-US:     1734231911290.16
//       fr-FR:     1734231911290,16
//       ja-JP:     1734231911290.16
//       ru-RU:     1734231911290,16
//    
//    -17394.32921:
//       en-US:         -17394.32921
//       fr-FR:         -17394,32921
//       ja-JP:         -17394.32921
//       ru-RU:         -17394,32921
//    
//    3193.23:
//       en-US:              3193.23
//       fr-FR:              3193,23
//       ja-JP:              3193.23
//       ru-RU:              3193,23
//    
//    98012368321.684:
//       en-US:      98012368321.684
//       fr-FR:      98012368321,684
//       ja-JP:      98012368321.684
//       ru-RU:      98012368321,684
' Define an array of numbers to display.
Dim numbers() As Decimal = { 1734231911290.16d, -17394.32921d, _
                             3193.23d, 98012368321.684d }
' Define the culture names used to display them.
Dim cultureNames() As String = { "en-US", "fr-FR", "ja-JP", "ru-RU" }

For Each number As Decimal In numbers
   Console.WriteLine("{0}:", Convert.ToString(number, _
                             System.Globalization.CultureInfo.InvariantCulture))
   For Each cultureName As String In cultureNames
      Dim culture As New System.Globalization.CultureInfo(cultureName)
      Console.WriteLine("   {0}: {1,20}", _
                        culture.Name, Convert.ToString(number, culture))
   Next
   Console.WriteLine()
Next   
' The example displays the following output:
'    1734231911290.16:
'       en-US:     1734231911290.16
'       fr-FR:     1734231911290,16
'       ja-JP:     1734231911290.16
'       ru-RU:     1734231911290,16
'    
'    -17394.32921:
'       en-US:         -17394.32921
'       fr-FR:         -17394,32921
'       ja-JP:         -17394.32921
'       ru-RU:         -17394,32921
'    
'    3193.23:
'       en-US:              3193.23
'       fr-FR:              3193,23
'       ja-JP:              3193.23
'       ru-RU:              3193,23
'    
'    98012368321.684:
'       en-US:      98012368321.684
'       fr-FR:      98012368321,684
'       ja-JP:      98012368321.684
'       ru-RU:      98012368321,684

Remarques

Cette implémentation est identique à Decimal.ToString(IFormatProvider).This implementation is identical to Decimal.ToString(IFormatProvider).

ToString(DateTime, IFormatProvider) ToString(DateTime, IFormatProvider) ToString(DateTime, IFormatProvider) ToString(DateTime, IFormatProvider)

Convertit la valeur du DateTime spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified DateTime to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(DateTime value, IFormatProvider ^ provider);
public static string ToString (DateTime value, IFormatProvider provider);
static member ToString : DateTime * IFormatProvider -> string
Public Shared Function ToString (value As DateTime, provider As IFormatProvider) As String

Paramètres

value
DateTime DateTime DateTime DateTime

Valeur de date et heure à convertir.The date and time value to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit DateTime une valeur en sa représentation sous forme de chaîne équivalente dans huit cultures différentes.The following example converts a DateTime value to its equivalent string representation in eight different cultures.

// Specify the date to be formatted using various cultures.
DateTime tDate = new DateTime(2010, 4, 15, 20, 30, 40, 333);
// Specify the cultures.
string[] cultureNames = { "en-US", "es-AR", "fr-FR", "hi-IN",
                          "ja-JP", "nl-NL", "ru-RU", "ur-PK" };

Console.WriteLine("Converting the date {0}: ", 
                  Convert.ToString(tDate, 
                          System.Globalization.CultureInfo.InvariantCulture));

foreach (string cultureName in cultureNames)
{
   System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);
   string dateString = Convert.ToString(tDate, culture);
   Console.WriteLine("   {0}:  {1,-12}", 
                     culture.Name, dateString);
}             
// The example displays the following output:
//       Converting the date 04/15/2010 20:30:40:
//          en-US:  4/15/2010 8:30:40 PM
//          es-AR:  15/04/2010 08:30:40 p.m.
//          fr-FR:  15/04/2010 20:30:40
//          hi-IN:  15-04-2010 20:30:40
//          ja-JP:  2010/04/15 20:30:40
//          nl-NL:  15-4-2010 20:30:40
//          ru-RU:  15.04.2010 20:30:40
//          ur-PK:  15/04/2010 8:30:40 PM      
' Specify the date to be formatted using various cultures.
Dim tDate As New Date(2010, 4, 15, 20, 30, 40, 333)
' Specify the cultures.
Dim cultureNames() As String = { "en-US", "es-AR", "fr-FR", "hi-IN", _
                                 "ja-JP", "nl-NL", "ru-RU", "ur-PK" }

Console.WriteLine("Converting the date {0}: ", _
                  Convert.ToString(tDate, _
                          System.Globalization.CultureInfo.InvariantCulture))

For Each cultureName As String In CultureNames
   Dim culture As New System.Globalization.CultureInfo(cultureName)
   Dim dateString As String = Convert.ToString(tDate, culture)
   Console.WriteLine("   {0}:  {1,-12}", _
                     culture.Name, dateString)
Next             
' The example displays the following output:
'       Converting the date 04/15/2010 20:30:40:
'          en-US:  4/15/2010 8:30:40 PM
'          es-AR:  15/04/2010 08:30:40 p.m.
'          fr-FR:  15/04/2010 20:30:40
'          hi-IN:  15-04-2010 20:30:40
'          ja-JP:  2010/04/15 20:30:40
'          nl-NL:  15-4-2010 20:30:40
'          ru-RU:  15.04.2010 20:30:40
'          ur-PK:  15/04/2010 8:30:40 PM      

Remarques

Cette implémentation est identique à DateTime.ToString(IFormatProvider).This implementation is identical to DateTime.ToString(IFormatProvider).

ToString(Int32, IFormatProvider) ToString(Int32, IFormatProvider) ToString(Int32, IFormatProvider) ToString(Int32, IFormatProvider)

Convertit la valeur de l'entier signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 32-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(int value, IFormatProvider ^ provider);
public static string ToString (int value, IFormatProvider provider);
static member ToString : int * IFormatProvider -> string
Public Shared Function ToString (value As Integer, provider As IFormatProvider) As String

Paramètres

value
Int32 Int32 Int32 Int32

Entier signé 32 bits à convertir.The 32-bit signed integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la ToString(Int32, IFormatProvider) méthode pour convertir chaque élément d’un tableau d’entiers en sa représentation sous forme de chaîne équivalente.It then calls the ToString(Int32, IFormatProvider) method to convert each element in an array of integers to its equivalent string representation. La conversion utilise la culture dite indifférente, ainsi que NumberFormatInfo l’objet personnalisé.The conversion uses the invariant culture as well as the custom NumberFormatInfo object.

int[] numbers = { Int32.MinValue, Int32.MaxValue};
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

foreach (int number in numbers)
   Console.WriteLine("{0,-12}  -->  {1,12}", 
                     Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), 
                     Convert.ToString(number, nfi));
// The example displays the following output:
//       -2147483648  -->  ~2147483648
//       2147483647  -->  2147483647
Dim numbers() As Integer = { Int32.MinValue, Int32.MaxValue}
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"

For Each number As Integer In numbers
   Console.WriteLine("{0,-12}  -->  {1,12}", _
                     Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), _
                     Convert.ToString(number, nfi))
Next
' The example displays the following output:
'       -2147483648  -->  ~2147483648
'       2147483647   -->  2147483647

Remarques

Cette implémentation est identique à Int32.ToString(IFormatProvider).This implementation is identical to Int32.ToString(IFormatProvider).

ToString(Double, IFormatProvider) ToString(Double, IFormatProvider) ToString(Double, IFormatProvider) ToString(Double, IFormatProvider)

Convertit la valeur du nombre à virgule flottante double précision spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified double-precision floating-point number to its equivalent string representation.

public:
 static System::String ^ ToString(double value, IFormatProvider ^ provider);
public static string ToString (double value, IFormatProvider provider);
static member ToString : double * IFormatProvider -> string
Public Shared Function ToString (value As Double, provider As IFormatProvider) As String

Paramètres

value
Double Double Double Double

Nombre à virgule flottante double précision à convertir.The double-precision floating-point number to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau Double de valeurs en sa représentation sous forme de chaîne équivalente dans quatre cultures différentes.The following example converts each element in an array of Double values to its equivalent string representation in four different cultures.

// Define an array of numbers to display.
double[] numbers = { -1.5345e16, -123.4321, 19092.123, 1.1734231911290e16 };
// Define the culture names used to display them.
string[] cultureNames = { "en-US", "fr-FR", "ja-JP", "ru-RU" };

foreach (double number in numbers)
{
   Console.WriteLine("{0}:", Convert.ToString(number,
                             System.Globalization.CultureInfo.InvariantCulture));
   foreach (string cultureName in cultureNames)
   {
      System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);
      Console.WriteLine("   {0}: {1,20}",
                        culture.Name, Convert.ToString(number, culture));
   }
   Console.WriteLine();
}   
// The example displays the following output:
//    -1.5345E+16:
//       en-US:          -1.5345E+16
//       fr-FR:          -1,5345E+16
//       ja-JP:          -1.5345E+16
//       ru-RU:          -1,5345E+16
//    
//    -123.4321:
//       en-US:            -123.4321
//       fr-FR:            -123,4321
//       ja-JP:            -123.4321
//       ru-RU:            -123,4321
//    
//    19092.123:
//       en-US:            19092.123
//       fr-FR:            19092,123
//       ja-JP:            19092.123
//       ru-RU:            19092,123
//    
//    1.173423191129E+16:
//       en-US:   1.173423191129E+16
//       fr-FR:   1,173423191129E+16
//       ja-JP:   1.173423191129E+16
//       ru-RU:   1,173423191129E+16
' Define an array of numbers to display.
Dim numbers() As Double = { -1.5345e16, -123.4321, 19092.123, _
                            1.1734231911290e16 }
' Define the culture names used to display them.
Dim cultureNames() As String = { "en-US", "fr-FR", "ja-JP", "ru-RU" }

For Each number As Double In numbers
   Console.WriteLine("{0}:", Convert.ToString(number, _
                             System.Globalization.CultureInfo.InvariantCulture))
   For Each cultureName As String In cultureNames
      Dim culture As New System.Globalization.CultureInfo(cultureName)
      Console.WriteLine("   {0}: {1,20}", _
                        culture.Name, Convert.ToString(number, culture))
   Next
   Console.WriteLine()
Next   
' The example displays the following output:
'    -1.5345E+16:
'       en-US:          -1.5345E+16
'       fr-FR:          -1,5345E+16
'       ja-JP:          -1.5345E+16
'       ru-RU:          -1,5345E+16
'    
'    -123.4321:
'       en-US:            -123.4321
'       fr-FR:            -123,4321
'       ja-JP:            -123.4321
'       ru-RU:            -123,4321
'    
'    19092.123:
'       en-US:            19092.123
'       fr-FR:            19092,123
'       ja-JP:            19092.123
'       ru-RU:            19092,123
'    
'    1.173423191129E+16:
'       en-US:   1.173423191129E+16
'       fr-FR:   1,173423191129E+16
'       ja-JP:   1.173423191129E+16
'       ru-RU:   1,173423191129E+16

Remarques

Cette implémentation est identique àDouble.ToString(IFormatProvider)This implementation is identical to Double.ToString(IFormatProvider)

ToString(Int32, Int32) ToString(Int32, Int32) ToString(Int32, Int32) ToString(Int32, Int32)

Convertit la valeur d'un entier signé 32 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of a 32-bit signed integer to its equivalent string representation in a specified base.

public:
 static System::String ^ ToString(int value, int toBase);
public static string ToString (int value, int toBase);
static member ToString : int * int -> string
Public Shared Function ToString (value As Integer, toBase As Integer) As String

Paramètres

value
Int32 Int32 Int32 Int32

Entier signé 32 bits à convertir.The 32-bit signed integer to convert.

toBase
Int32 Int32 Int32 Int32

Base de la valeur de retour, qui doit être 2, 8, 10 ou 16.The base of the return value, which must be 2, 8, 10, or 16.

Retours

Représentation sous forme de chaîne de value en base toBase.The string representation of value in base toBase.

Exceptions

toBase n’a pas la valeur 2, 8, 10 ou 16.toBase is not 2, 8, 10, or 16.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers en sa représentation sous forme de chaîne binaire, hexadécimale, décimale et hexadécimale équivalente.The following example converts each element in an integer array to its equivalent binary, hexadecimal, decimal, and hexadecimal string representations.

int[] bases = { 2, 8, 10, 16};
int[] numbers = { Int32.MinValue, -19327543, -13621, -18, 12, 
                             19142, Int32.MaxValue };

foreach (int baseValue in bases)
{
   Console.WriteLine("Base {0} conversion:", baseValue);
   foreach (int number in numbers)
   {
      Console.WriteLine("   {0,-15}  -->  0x{1}", 
                        number, Convert.ToString(number, baseValue));
   }
}
// The example displays the following output:
//    Base 2 conversion:
//       -2147483648      -->  0x10000000000000000000000000000000
//       -19327543        -->  0x11111110110110010001010111001001
//       -13621           -->  0x11111111111111111100101011001011
//       -18              -->  0x11111111111111111111111111101110
//       12               -->  0x1100
//       19142            -->  0x100101011000110
//       2147483647       -->  0x1111111111111111111111111111111
//    Base 8 conversion:
//       -2147483648      -->  0x20000000000
//       -19327543        -->  0x37666212711
//       -13621           -->  0x37777745313
//       -18              -->  0x37777777756
//       12               -->  0x14
//       19142            -->  0x45306
//       2147483647       -->  0x17777777777
//    Base 10 conversion:
//       -2147483648      -->  0x-2147483648
//       -19327543        -->  0x-19327543
//       -13621           -->  0x-13621
//       -18              -->  0x-18
//       12               -->  0x12
//       19142            -->  0x19142
//       2147483647       -->  0x2147483647
//    Base 16 conversion:
//       -2147483648      -->  0x80000000
//       -19327543        -->  0xfed915c9
//       -13621           -->  0xffffcacb
//       -18              -->  0xffffffee
//       12               -->  0xc
//       19142            -->  0x4ac6
//       2147483647       -->  0x7fffffff       
Dim bases() As Integer = { 2, 8, 10, 16}
Dim numbers() As Integer = { Int32.MinValue, -19327543, -13621, -18, 12, _
                             19142, Int32.MaxValue }

For Each base As Integer In bases
   Console.WriteLine("Base {0} conversion:", base)
   For Each number As Integer In numbers
      Console.WriteLine("   {0,-15}  -->  0x{1}", _
                        number, Convert.ToString(number, base))
   Next
Next
' The example displays the following output:
'    Base 2 conversion:
'       -2147483648      -->  0x10000000000000000000000000000000
'       -19327543        -->  0x11111110110110010001010111001001
'       -13621           -->  0x11111111111111111100101011001011
'       -18              -->  0x11111111111111111111111111101110
'       12               -->  0x1100
'       19142            -->  0x100101011000110
'       2147483647       -->  0x1111111111111111111111111111111
'    Base 8 conversion:
'       -2147483648      -->  0x20000000000
'       -19327543        -->  0x37666212711
'       -13621           -->  0x37777745313
'       -18              -->  0x37777777756
'       12               -->  0x14
'       19142            -->  0x45306
'       2147483647       -->  0x17777777777
'    Base 10 conversion:
'       -2147483648      -->  0x-2147483648
'       -19327543        -->  0x-19327543
'       -13621           -->  0x-13621
'       -18              -->  0x-18
'       12               -->  0x12
'       19142            -->  0x19142
'       2147483647       -->  0x2147483647
'    Base 16 conversion:
'       -2147483648      -->  0x80000000
'       -19327543        -->  0xfed915c9
'       -13621           -->  0xffffcacb
'       -18              -->  0xffffffee
'       12               -->  0xc
'       19142            -->  0x4ac6
'       2147483647       -->  0x7fffffff
let bases = [2; 8; 10; 16]
let numbers = [ Int32.MinValue; -19327543; -13621; -18; 12; 19142; Int32.MaxValue ]

for baseValue in bases do
    printfn "Base %i conversion:" baseValue
    for number in numbers do
        printfn "   % -15i  -->  0x%s" number (Convert.ToString (number, baseValue))
// The example displays the following output:
//     Base 2 conversion:
//        -2147483648      -->  0x10000000000000000000000000000000
//        -19327543        -->  0x11111110110110010001010111001001
//        -13621           -->  0x11111111111111111100101011001011
//        -18              -->  0x11111111111111111111111111101110
//         12              -->  0x1100
//         19142           -->  0x100101011000110
//         2147483647      -->  0x1111111111111111111111111111111
//     Base 8 conversion:
//        -2147483648      -->  0x20000000000
//        -19327543        -->  0x37666212711
//        -13621           -->  0x37777745313
//        -18              -->  0x37777777756
//         12              -->  0x14
//         19142           -->  0x45306
//         2147483647      -->  0x17777777777
//     Base 10 conversion:
//        -2147483648      -->  0x-2147483648
//        -19327543        -->  0x-19327543
//        -13621           -->  0x-13621
//        -18              -->  0x-18
//         12              -->  0x12
//         19142           -->  0x19142
//         2147483647      -->  0x2147483647
//     Base 16 conversion:
//        -2147483648      -->  0x80000000
//        -19327543        -->  0xfed915c9
//        -13621           -->  0xffffcacb
//        -18              -->  0xffffffee
//         12              -->  0xc
//         19142           -->  0x4ac6
//         2147483647      -->  0x7fffffff

Remarques

Si value est positif et toBase est 2, 8 ou 16, la chaîne retournée utilise la représentation de signe et d’amplitude.If value is positive and toBase is 2, 8, or 16, the returned string uses sign-and-magnitude representation. Si value est négatif et toBase est 2, 8 ou 16, la chaîne retournée utilise la représentation de complément à deux.If value is negative and toBase is 2, 8, or 16, the returned string uses two's complement representation. Cela signifie que le bit de poids fort de l’octet de poids le plus élevé (bit 31) est interprété comme le bit de signe.This means that the high-order bit of the highest-order byte (bit 31) is interpreted as the sign bit. Si la ToString(Int32, Int32) méthode est appelée pour créer une chaîne qui sera ensuite reconvertie en nombre, une méthode correspondante qui suppose une représentation numérique similaire doit être appelée pour effectuer la conversion.If the ToString(Int32, Int32) method is called to create a string that will later be converted back to a number, a corresponding method that assumes a similar numeric representation should be called to perform the conversion. Ces méthodes incluent Convert.ToInt32(String, Int32) et Int32.Parse(String, NumberStyles).Such methods include Convert.ToInt32(String, Int32) and Int32.Parse(String, NumberStyles).

ToString(SByte, IFormatProvider) ToString(SByte, IFormatProvider) ToString(SByte, IFormatProvider) ToString(SByte, IFormatProvider)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 8-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::SByte value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static string ToString (sbyte value, IFormatProvider provider);
static member ToString : sbyte * IFormatProvider -> string
Public Shared Function ToString (value As SByte, provider As IFormatProvider) As String

Paramètres

value
SByte SByte SByte SByte

Entier signé 8 bits à convertir.The 8-bit signed integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la Convert.ToString(SByte, IFormatProvider) méthode pour convertir chaque élément dans un tableau d’octets signé en sa représentation sous forme de chaîne équivalente.It then calls the Convert.ToString(SByte, IFormatProvider) method to convert each element in signed byte array to its equivalent string representation. La conversion utilise la culture dite indifférente, ainsi que NumberFormatInfo l’objet personnalisé.The conversion uses the invariant culture as well as the custom NumberFormatInfo object.

sbyte[] numbers = { SByte.MinValue, -12, 17, SByte.MaxValue};
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";
foreach (sbyte number in numbers)
   Console.WriteLine(Convert.ToString(number, nfi));
// The example displays the following output:
//       ~128
//       ~12
//       17
//       127      
Dim numbers() As SByte = { SByte.MinValue, -12, 17, SByte.MaxValue}
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"
For Each number As SByte In numbers
   Console.WriteLine(Convert.ToString(number, nfi))
Next
' The example displays the following output:
'       ~128
'       ~12
'       17
'       127          

Remarques

Cette implémentation est identique à SByte.ToString(IFormatProvider).This implementation is identical to SByte.ToString(IFormatProvider).

ToString(Int64, Int32) ToString(Int64, Int32) ToString(Int64, Int32) ToString(Int64, Int32)

Convertit la valeur d'un entier signé 64 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of a 64-bit signed integer to its equivalent string representation in a specified base.

public:
 static System::String ^ ToString(long value, int toBase);
public static string ToString (long value, int toBase);
static member ToString : int64 * int -> string
Public Shared Function ToString (value As Long, toBase As Integer) As String

Paramètres

value
Int64 Int64 Int64 Int64

Entier signé 64 bits à convertir.The 64-bit signed integer to convert.

toBase
Int32 Int32 Int32 Int32

Base de la valeur de retour, qui doit être 2, 8, 10 ou 16.The base of the return value, which must be 2, 8, 10, or 16.

Retours

Représentation sous forme de chaîne de value en base toBase.The string representation of value in base toBase.

Exceptions

toBase n’a pas la valeur 2, 8, 10 ou 16.toBase is not 2, 8, 10, or 16.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers long en sa représentation sous forme de chaîne binaire, hexadécimale, décimale et hexadécimale équivalente.The following example converts each element in a long integer array to its equivalent binary, hexadecimal, decimal, and hexadecimal string representations.

int[] bases = { 2, 8, 10, 16};
long[] numbers = { Int64.MinValue, -193275430, -13621, -18, 12, 
                   1914206117, Int64.MaxValue };

foreach (int baseValue in bases)
{
   Console.WriteLine("Base {0} conversion:", baseValue);
   foreach (long number in numbers)
   {
      Console.WriteLine("   {0,-23}  -->  0x{1}", 
                        number, Convert.ToString(number, baseValue));
   }
}
// The example displays the following output:
//    Base 2 conversion:
//       -9223372036854775808     -->  0x1000000000000000000000000000000000000000000000000000000000000000
//       -193275430               -->  0x1111111111111111111111111111111111110100011110101101100111011010
//       -13621                   -->  0x1111111111111111111111111111111111111111111111111100101011001011
//       -18                      -->  0x1111111111111111111111111111111111111111111111111111111111101110
//       12                       -->  0x1100
//       1914206117               -->  0x1110010000110000111011110100101
//       9223372036854775807      -->  0x111111111111111111111111111111111111111111111111111111111111111
//    Base 8 conversion:
//       -9223372036854775808     -->  0x1000000000000000000000
//       -193275430               -->  0x1777777777776436554732
//       -13621                   -->  0x1777777777777777745313
//       -18                      -->  0x1777777777777777777756
//       12                       -->  0x14
//       1914206117               -->  0x16206073645
//       9223372036854775807      -->  0x777777777777777777777
//    Base 10 conversion:
//       -9223372036854775808     -->  0x-9223372036854775808
//       -193275430               -->  0x-193275430
//       -13621                   -->  0x-13621
//       -18                      -->  0x-18
//       12                       -->  0x12
//       1914206117               -->  0x1914206117
//       9223372036854775807      -->  0x9223372036854775807
//    Base 16 conversion:
//       -9223372036854775808     -->  0x8000000000000000
//       -193275430               -->  0xfffffffff47ad9da
//       -13621                   -->  0xffffffffffffcacb
//       -18                      -->  0xffffffffffffffee
//       12                       -->  0xc
//       1914206117               -->  0x721877a5
//       9223372036854775807      -->  0x7fffffffffffffff
Dim bases() As Integer = { 2, 8, 10, 16}
Dim numbers() As Long = { Int64.MinValue, -193275430, -13621, -18, 12, _
                             1914206117, Int64.MaxValue }

For Each base As Integer In bases
   Console.WriteLine("Base {0} conversion:", base)
   For Each number As Long In numbers
      Console.WriteLine("   {0,-23}  -->  0x{1}", _
                        number, Convert.ToString(number, base))
   Next
Next
' The example displays the following output:
'    Base 2 conversion:
'       -9223372036854775808     -->  0x1000000000000000000000000000000000000000000000000000000000000000
'       -193275430               -->  0x1111111111111111111111111111111111110100011110101101100111011010
'       -13621                   -->  0x1111111111111111111111111111111111111111111111111100101011001011
'       -18                      -->  0x1111111111111111111111111111111111111111111111111111111111101110
'       12                       -->  0x1100
'       1914206117               -->  0x1110010000110000111011110100101
'       9223372036854775807      -->  0x111111111111111111111111111111111111111111111111111111111111111
'    Base 8 conversion:
'       -9223372036854775808     -->  0x1000000000000000000000
'       -193275430               -->  0x1777777777776436554732
'       -13621                   -->  0x1777777777777777745313
'       -18                      -->  0x1777777777777777777756
'       12                       -->  0x14
'       1914206117               -->  0x16206073645
'       9223372036854775807      -->  0x777777777777777777777
'    Base 10 conversion:
'       -9223372036854775808     -->  0x-9223372036854775808
'       -193275430               -->  0x-193275430
'       -13621                   -->  0x-13621
'       -18                      -->  0x-18
'       12                       -->  0x12
'       1914206117               -->  0x1914206117
'       9223372036854775807      -->  0x9223372036854775807
'    Base 16 conversion:
'       -9223372036854775808     -->  0x8000000000000000
'       -193275430               -->  0xfffffffff47ad9da
'       -13621                   -->  0xffffffffffffcacb
'       -18                      -->  0xffffffffffffffee
'       12                       -->  0xc
'       1914206117               -->  0x721877a5
'       9223372036854775807      -->  0x7fffffffffffffff
let bases = [2; 8; 10; 16]
let numbers = [ Int64.MinValue; -193275430L; -13621L; -18L; 12L; 1914206117L; Int64.MaxValue ]

for baseValue in bases do
    printfn "Base %i conversion:" baseValue
    for number in numbers do
        printfn "   % -23i  -->  0x%s" number (Convert.ToString (number, baseValue))
// The example displays the following output:
//     Base 2 conversion:
//        -9223372036854775808     -->  0x1000000000000000000000000000000000000000000000000000000000000000
//        -193275430               -->  0x1111111111111111111111111111111111110100011110101101100111011010
//        -13621                   -->  0x1111111111111111111111111111111111111111111111111100101011001011
//        -18                      -->  0x1111111111111111111111111111111111111111111111111111111111101110
//         12                      -->  0x1100
//         1914206117              -->  0x1110010000110000111011110100101
//         9223372036854775807     -->  0x111111111111111111111111111111111111111111111111111111111111111
//     Base 8 conversion:
//        -9223372036854775808     -->  0x1000000000000000000000
//        -193275430               -->  0x1777777777776436554732
//        -13621                   -->  0x1777777777777777745313
//        -18                      -->  0x1777777777777777777756
//         12                      -->  0x14
//         1914206117              -->  0x16206073645
//         9223372036854775807     -->  0x777777777777777777777
//     Base 10 conversion:
//        -9223372036854775808     -->  0x-9223372036854775808
//        -193275430               -->  0x-193275430
//        -13621                   -->  0x-13621
//        -18                      -->  0x-18
//         12                      -->  0x12
//         1914206117              -->  0x1914206117
//         9223372036854775807     -->  0x9223372036854775807
//     Base 16 conversion:
//        -9223372036854775808     -->  0x8000000000000000
//        -193275430               -->  0xfffffffff47ad9da
//        -13621                   -->  0xffffffffffffcacb
//        -18                      -->  0xffffffffffffffee
//         12                      -->  0xc
//         1914206117              -->  0x721877a5
//         9223372036854775807     -->  0x7fffffffffffffff

Remarques

Si value est positif et toBase n’est pas 10, la chaîne retournée utilise la représentation de signe et de magnitude.If value is positive and toBase is not 10, the returned string uses sign-and-magnitude representation. Si value est négatif et toBase n’est pas 10, la chaîne retournée utilise la représentation du complément à deux.If value is negative and toBase is not 10, the returned string uses two's complement representation. Cela signifie que le bit de poids fort de l’octet de poids le plus élevé (bit 63) est interprété comme le bit de signe.This means that the high-order bit of the highest-order byte (bit 63) is interpreted as the sign bit. Si la ToString(Int64, Int32) méthode est appelée pour créer une chaîne qui sera ensuite reconvertie en nombre, une méthode correspondante qui suppose une représentation numérique similaire doit être appelée pour effectuer la conversion.If the ToString(Int64, Int32) method is called to create a string that will later be converted back to a number, a corresponding method that assumes a similar numeric representation should be called to perform the conversion. Ces méthodes incluent Convert.ToInt64(String, Int32) et Int64.Parse(String, NumberStyles).Such methods include Convert.ToInt64(String, Int32) and Int64.Parse(String, NumberStyles).

ToString(Object, IFormatProvider) ToString(Object, IFormatProvider) ToString(Object, IFormatProvider) ToString(Object, IFormatProvider)

Convertit la valeur de l'objet spécifié en représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified object to its equivalent string representation using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::Object ^ value, IFormatProvider ^ provider);
public static string ToString (object value, IFormatProvider provider);
static member ToString : obj * IFormatProvider -> string
Public Shared Function ToString (value As Object, provider As IFormatProvider) As String

Paramètres

value
Object Object Object Object

Objet qui fournit la valeur à convertir, ou null.An object that supplies the value to convert, or null.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

La représentation sous forme de chaîne de value, ou Empty si la valeur value est un objet dont la valeur est null.The string representation of value, or Empty if value is an object whose value is null. Si value est null, la méthode retourne null.If value is null, the method returns null.

Exemples

L’exemple suivant définit une Temperature classe qui substitue la Object.ToString méthode, mais n’implémente pas IConvertible l’interface.The following example defines a Temperature class that overrides the Object.ToString method but does not implement the IConvertible interface. L’exemple illustre la façon dont les appels Convert.ToString(Object, IFormatProvider) à la méthode appellent à leur tour Temperature.ToString la méthode.The example illustrates how calls to the Convert.ToString(Object, IFormatProvider) method, in turn, call the Temperature.ToString method.

using System;

public class Temperature
{
   private decimal m_Temp;

   public Temperature(decimal temperature)
   {
      this.m_Temp = temperature;
   }
   
   public decimal Celsius
   {
      get { return this.m_Temp; }   
   }
   
   public decimal Kelvin
   {
      get { return this.m_Temp + 273.15m; }    
   }
   
   public decimal Fahrenheit
   {
      get { return Math.Round((decimal) (this.m_Temp * 9 / 5 + 32), 2); }
   }
   
   public override string ToString()
   {
      return m_Temp.ToString("N2") + " °C";
   }

}

public class Example
{
   public static void Main()
   {
      Temperature cold = new Temperature(-40);
      Temperature freezing = new Temperature(0);
      Temperature boiling = new Temperature(100);
      
      Console.WriteLine(Convert.ToString(cold, null));
      Console.WriteLine(Convert.ToString(freezing, null));
      Console.WriteLine(Convert.ToString(boiling, null));
   }
}
// The example dosplays the following output:
//       -40.00 °C
//       0.00 °C
//       100.00 °C
Public Class Temperature 
   Private m_Temp As Decimal

   Public Sub New(temperature As Decimal)
      Me.m_Temp = temperature
   End Sub
   
   Public ReadOnly Property Celsius() As Decimal
      Get
         Return Me.m_Temp
      End Get   
   End Property
   
   Public ReadOnly Property Kelvin() As Decimal
      Get
         Return Me.m_Temp + 273.15d   
      End Get
   End Property
   
   Public ReadOnly Property Fahrenheit() As Decimal
      Get
         Return Math.Round(CDec(Me.m_Temp * 9 / 5 + 32), 2)
      End Get      
   End Property
   
   Public Overrides Function ToString() As String
      Return m_Temp.ToString("N2") & " °C"
   End Function
End Class

Module Example
   Public Sub Main()
      Dim cold As New Temperature(-40)
      Dim freezing As New Temperature(0)
      Dim boiling As New Temperature(100)
      
      Console.WriteLine(Convert.ToString(cold, Nothing))
      Console.WriteLine(Convert.ToString(freezing, Nothing))
      Console.WriteLine(Convert.ToString(boiling, Nothing))
   End Sub
End Module
' The example displays the following output:
'       -40.00 °C
'       0.00 °C
'       100.00 °C

L’exemple suivant définit une Temperature classe qui implémente l' IFormattable interface, mais n’implémente IConvertible pas l’interface.The following example defines a Temperature class that implements the IFormattable interface but does not implement the IConvertible interface. Son IFormattable.ToString implémentation représente la Temperature valeur en degrés Celsius, Fahrenheit ou Kelvin, en fonction de la chaîne de format.Its IFormattable.ToString implementation represents the Temperature value in Celsius, Fahrenheit, or Kelvin, depending on the format string. L’exemple définit également une TemperatureProvider classe qui IFormatProvider implémente et fournit une chaîne de format générée de façon aléatoire qui est utilisée IFormattable par l’implémentation Temperature de la classe.The example also defines a TemperatureProvider class that implements IFormatProvider and provides a randomly generated format string that is used by the IFormattable implementation of the Temperature class.

using System;

public class Temperature : IFormattable 
{
   private decimal m_Temp; 

   public Temperature(decimal temperature)
   {
      this.m_Temp = temperature;
   } 

   public decimal Celsius 
   { get { return this.m_Temp; } } 

   public decimal Kelvin 
   { get { return this.m_Temp + 273.15m; } }   

   public decimal Fahrenheit
   {  get { return Math.Round(this.m_Temp * 9m / 5m + 32m, 2); } }

   public override String ToString() 
   { 
      return ToString("G", null); 
   } 
   
   public String ToString(String fmt, IFormatProvider provider) 
   {
      TemperatureProvider formatter = null;
      if (provider != null) 
         formatter = provider.GetFormat(typeof(TemperatureProvider)) 
                                       as TemperatureProvider;

      if (String.IsNullOrWhiteSpace(fmt)) {
         if (formatter != null) 
            fmt = formatter.Format;
         else
            fmt = "G";
      }

      switch (fmt.ToUpper()) {
         case "G":
         case "C":
            return m_Temp.ToString("N2") + " °C"; 
         case "F":
            return Fahrenheit.ToString("N2") + " °F";
         case "K":
            return Kelvin.ToString("N2") + " K";
         default:
            throw new FormatException(String.Format("'{0}' is not a valid format specifier.", fmt));
      }
   }                             
} 

public class TemperatureProvider : IFormatProvider
{
   private String[] fmtStrings = { "C", "G", "F", "K" };
   private Random rnd = new Random();
   
   public Object GetFormat(Type formatType) 
   { 
      return this; 
   }
   
   public String Format
   { get { return fmtStrings[rnd.Next(0, fmtStrings.Length)]; } }
}

public class Example
{
   public static void Main()
   {
      Temperature cold = new Temperature (-40);
      Temperature freezing = new Temperature (0);
      Temperature boiling = new Temperature (100);

      TemperatureProvider tp = new TemperatureProvider();
      
      Console.WriteLine(Convert.ToString(cold, tp));
      Console.WriteLine(Convert.ToString(freezing, tp));
      Console.WriteLine(Convert.ToString(boiling, tp));
   }
}
// The example displays output like the following:
//       -40.00 °C
//       273.15 K
//       100.00 °C
Public Class Temperature : Implements IFormattable 
   Private m_Temp As Decimal 

   Public Sub New(temperature As Decimal)
      Me.m_Temp = temperature
   End Sub 

   Public ReadOnly Property Celsius As Decimal 
      Get 
         Return Me.m_Temp
      End Get    
   End Property 

   Public ReadOnly Property Kelvin As Decimal 
      Get 
         Return Me.m_Temp + 273.15d   
      End Get 
   End Property 

   Public ReadOnly Property Fahrenheit As Decimal 
      Get 
         Return Math.Round(CDec(Me.m_Temp * 9 / 5 + 32), 2)
      End Get       
   End Property 

   Public Overrides Function ToString() As String 
      Return ToString("G", Nothing) 
   End Function 
   
   Public Overloads Function ToString(fmt As String, 
                                      provider As IFormatProvider) As String _
                             Implements IFormattable.ToString
      Dim formatter As TemperatureProvider = Nothing
      If provider IsNot Nothing Then formatter = TryCast(provider.GetFormat(GetType(TemperatureProvider)),
                                                         TemperatureProvider)

      If String.IsNullOrWhiteSpace(fmt) Then
         If formatter IsNot Nothing Then
            fmt = formatter.Format
         Else
            fmt = "G"
         End If
      End If

      Select Case fmt.ToUpper()
         Case "G", "C"
            Return m_Temp.ToString("N2") & " °C" 
         Case "F"
            Return Fahrenheit.ToString("N2") + " °F"
         Case "K"
            Return Kelvin.ToString("N2") + " K"
         Case Else
            Throw New FormatException(String.Format("'{0}' is not a valid format specifier.", fmt))
      End Select
   End Function                             
End Class 

Public Class TemperatureProvider : Implements IFormatProvider
   Private fmtStrings() As String = { "C", "G", "F", "K" }
   Private rnd As New Random()
   
   Public Function GetFormat(formatType As Type) As Object _
                   Implements IFormatProvider.GetFormat 
      Return Me 
   End Function
   
   Public ReadOnly Property Format As String
      Get
         Return fmtStrings(rnd.Next(0, fmtStrings.Length))
      End Get
   End Property
End Class

Module Example
   Public Sub Main()
      Dim cold As New Temperature(-40)
      Dim freezing As New Temperature(0)
      Dim boiling As New Temperature(100)

      Dim tp As New TemperatureProvider()
      
      Console.WriteLine(Convert.ToString(cold, tp))
      Console.WriteLine(Convert.ToString(freezing, tp))
      Console.WriteLine(Convert.ToString(boiling, tp))
   End Sub 
End Module 
' The example displays output like the following:
'       -40.00 °C
'       273.15 K
'       100.00 °C

Remarques

Si le value paramètre implémente l' IConvertible interface, la méthode appelle l' IConvertible.ToString(IFormatProvider) implémentation de value.If the value parameter implements the IConvertible interface, the method calls the IConvertible.ToString(IFormatProvider) implementation of value. Sinon, si le value paramètre implémente l' IFormattable interface, la méthode appelle son IFormattable.ToString(String, IFormatProvider) implémentation.Otherwise, if the value parameter implements the IFormattable interface, the method calls its IFormattable.ToString(String, IFormatProvider) implementation. Si value n’implémente aucune interface, la méthode appelle value la méthode ToString() du paramètre, et provider le paramètre est ignoré.If value implements neither interface, the method calls the value parameter's ToString() method, and the provider parameter is ignored.

Le provider paramètre est utilisé si le value paramètre implémente l' IConvertible interface IFormattable ou.The provider parameter is used if the value parameter implements the IConvertible or IFormattable interface. L’utilisation la plus courante du provider paramètre consiste à spécifier les informations spécifiques à la culture utilisées dans la valueconversion de.The most common use of the provider parameter is to specify culture-specific information used in the conversion of value. Par exemple, si le value paramètre est un nombre décimal négatif, le provider paramètre peut fournir des informations spécifiques à la culture sur la notation utilisée pour le signe négatif et le séparateur décimal.For example, if the value parameter is a negative decimal number, the provider parameter can supply culture-specific information about the notation used for the negative sign and decimal separator. Le deuxième exemple de la section suivante illustre un fournisseur de format qui ne fournit pas d’informations de mise en forme dépendantes de la culture.The second example in the next section illustrates a format provider that does not supply culture-sensitive formatting information.

ToString(Single, IFormatProvider) ToString(Single, IFormatProvider) ToString(Single, IFormatProvider) ToString(Single, IFormatProvider)

Convertit la valeur du nombre à virgule flottante simple précision spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified single-precision floating-point number to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(float value, IFormatProvider ^ provider);
public static string ToString (float value, IFormatProvider provider);
static member ToString : single * IFormatProvider -> string
Public Shared Function ToString (value As Single, provider As IFormatProvider) As String

Paramètres

value
Single Single Single Single

Nombre à virgule flottante simple précision à convertir.The single-precision floating-point number to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau Single de valeurs en sa représentation sous forme de chaîne équivalente dans quatre cultures différentes.The following example converts each element in an array of Single values to its equivalent string representation in four different cultures.

// Define an array of numbers to display.
float[] numbers = { -1.5345e16f, -123.4321f, 19092.123f, 1.1734231911290e16f };
// Define the culture names used to display them.
string[] cultureNames = { "en-US", "fr-FR", "ja-JP", "ru-RU" };

foreach (float number in numbers)
{
   Console.WriteLine("{0}:", Convert.ToString(number,
                             System.Globalization.CultureInfo.InvariantCulture));
   foreach (string cultureName in cultureNames)
   {
      System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);
      Console.WriteLine("   {0}: {1,20}",
                        culture.Name, Convert.ToString(number, culture));
   }
   Console.WriteLine();
}   
// The example displays the following output:
//    -1.5345E+16:
//       en-US:          -1.5345E+16
//       fr-FR:          -1,5345E+16
//       ja-JP:          -1.5345E+16
//       ru-RU:          -1,5345E+16
//    
//    -123.4321:
//       en-US:            -123.4321
//       fr-FR:            -123,4321
//       ja-JP:            -123.4321
//       ru-RU:            -123,4321
//    
//    19092.123:
//       en-US:            19092.123
//       fr-FR:            19092,123
//       ja-JP:            19092.123
//       ru-RU:            19092,123
//    
//    1.173423191129E+16:
//       en-US:   1.173423191129E+16
//       fr-FR:   1,173423191129E+16
//       ja-JP:   1.173423191129E+16
//       ru-RU:   1,173423191129E+16
' Define an array of numbers to display.
Dim numbers() As Single = { -1.5345e16, -123.4321, 19092.123, _
                            1.1734231911290e16 }
' Define the culture names used to display them.
Dim cultureNames() As String = { "en-US", "fr-FR", "ja-JP", "ru-RU" }

For Each number As Single In numbers
   Console.WriteLine("{0}:", Convert.ToString(number, _
                             System.Globalization.CultureInfo.InvariantCulture))
   For Each cultureName As String In cultureNames
      Dim culture As New System.Globalization.CultureInfo(cultureName)
      Console.WriteLine("   {0}: {1,20}", _
                        culture.Name, Convert.ToString(number, culture))
   Next
   Console.WriteLine()
Next   
' The example displays the following output:
'    -1.5345E+16:
'       en-US:          -1.5345E+16
'       fr-FR:          -1,5345E+16
'       ja-JP:          -1.5345E+16
'       ru-RU:          -1,5345E+16
'    
'    -123.4321:
'       en-US:            -123.4321
'       fr-FR:            -123,4321
'       ja-JP:            -123.4321
'       ru-RU:            -123,4321
'    
'    19092.123:
'       en-US:            19092.123
'       fr-FR:            19092,123
'       ja-JP:            19092.123
'       ru-RU:            19092,123
'    
'    1.173423191129E+16:
'       en-US:   1.173423191129E+16
'       fr-FR:   1,173423191129E+16
'       ja-JP:   1.173423191129E+16
'       ru-RU:   1,173423191129E+16

Remarques

Cette implémentation est identique à Single.ToString(IFormatProvider).This implementation is identical to Single.ToString(IFormatProvider).

ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider) ToString(String, IFormatProvider)

Retourne l'instance de chaîne spécifiée. Aucune conversion n'est effectuée.Returns the specified string instance; no actual conversion is performed.

public:
 static System::String ^ ToString(System::String ^ value, IFormatProvider ^ provider);
public static string ToString (string value, IFormatProvider provider);
static member ToString : string * IFormatProvider -> string
Public Shared Function ToString (value As String, provider As IFormatProvider) As String

Paramètres

value
String String String String

Chaîne à retourner.The string to return.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information. Ce paramètre est ignoré.This parameter is ignored.

Retours

value est retourné sans modification.value is returned unchanged.

Exemples

L’exemple suivant appelle la ToString méthode avec un String paramètre.The following example calls the ToString method with a String parameter. La méthode retourne le non modifié String sans référencer IFormatProvider l’objet.The method returns the unmodified String without referencing the IFormatProvider object.

// Example of Convert::ToString( non-numeric types, IFormatProvider ).
using namespace System;
using namespace System::Globalization;

#define null (Object^)0

// An instance of this class can be passed to methods that require 
// an IFormatProvider.
ref class DummyProvider: public IFormatProvider
{
public:

   // Normally, GetFormat returns an object of the requested type
   // (usually itself) if it is able; otherwise, it returns Nothing. 
   virtual Object^ GetFormat( Type^ argType )
   {
      // Here, the type of argType is displayed, and GetFormat
      // always returns Nothing.
      Console::Write( "{0,-40}", argType->ToString() );
      return null;
   }
};

int main()
{
   // Create an instance of the IFormatProvider.
   DummyProvider^ provider = gcnew DummyProvider;
   String^ converted;

   // Convert these values using DummyProvider.
   int Int32A = -252645135;
   double DoubleA = 61680.3855;
   Object^ ObjDouble =  -98765.4321;
   DateTime DayTimeA = DateTime(2001,9,11,13,45,0);
   bool BoolA = true;
   String^ StringA = "Qwerty";
   Char CharA = '$';
   TimeSpan TSpanA = TimeSpan(0,18,0);
   Object^ ObjOther = static_cast<Object^>(provider);
   Console::WriteLine( "This example of "
   "Convert::ToString( non-numeric, IFormatProvider* ) \n"
   "generates the following output. The provider type, "
   "argument type, \nand argument value are displayed." );
   Console::WriteLine( "\nNote: The IFormatProvider object is "
   "not called for Boolean, String, \nChar, TimeSpan, "
   "and non-numeric Object." );

   // The format provider is called for these conversions.
   Console::WriteLine();
   converted = Convert::ToString( Int32A, provider );
   Console::WriteLine( "int      {0}", converted );
   converted = Convert::ToString( DoubleA, provider );
   Console::WriteLine( "double   {0}", converted );
   converted = Convert::ToString( ObjDouble, provider );
   Console::WriteLine( "Object   {0}", converted );
   converted = Convert::ToString( DayTimeA, provider );
   Console::WriteLine( "DateTime {0}", converted );

   // The format provider is not called for these conversions.
   Console::WriteLine();
   converted = Convert::ToString( BoolA, provider );
   Console::WriteLine( "bool     {0}", converted );
   converted = Convert::ToString( StringA, provider );
   Console::WriteLine( "String   {0}", converted );
   converted = Convert::ToString( CharA, provider );
   Console::WriteLine( "Char     {0}", converted );
   converted = Convert::ToString( TSpanA, provider );
   Console::WriteLine( "TimeSpan {0}", converted );
   converted = Convert::ToString( ObjOther, provider );
   Console::WriteLine( "Object   {0}", converted );
}

/*
This example of Convert::ToString( non-numeric, IFormatProvider* )
generates the following output. The provider type, argument type,
and argument value are displayed.

Note: The IFormatProvider object is not called for Boolean, String,
Char, TimeSpan, and non-numeric Object.

System.Globalization.NumberFormatInfo   int      -252645135
System.Globalization.NumberFormatInfo   double   61680.3855
System.Globalization.NumberFormatInfo   Object   -98765.4321
System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM

bool     True
String   Qwerty
Char     $
TimeSpan 00:18:00
Object   DummyProvider
*/
// Example of Convert.ToString( non-numeric types, IFormatProvider ).
using System;
using System.Globalization;

// An instance of this class can be passed to methods that require 
// an IFormatProvider.
public class DummyProvider : IFormatProvider
{
    // Normally, GetFormat returns an object of the requested type
    // (usually itself) if it is able; otherwise, it returns Nothing. 
    public object GetFormat( Type argType )
    {
        // Here, the type of argType is displayed, and GetFormat
        // always returns Nothing.
        Console.Write( "{0,-40}", argType.ToString( ) );
        return null;
    }
}

class ConvertNonNumericProviderDemo
{
    static void Main( )
    {
        // Create an instance of the IFormatProvider.
        DummyProvider provider = new DummyProvider( );
        string converted;

        // Convert these values using DummyProvider.
        int      Int32A     = -252645135;
        double   DoubleA    = 61680.3855;
        object   ObjDouble  = (object)( -98765.4321 );
        DateTime DayTimeA   = new DateTime( 2001, 9, 11, 13, 45, 0 );

        bool     BoolA      = true;
        string   StringA    = "Qwerty";
        char     CharA      = '$';
        TimeSpan TSpanA     = new TimeSpan( 0, 18, 0 );
        object   ObjOther   = (object)provider;

        Console.WriteLine( "This example of " +
            "Convert.ToString( non-numeric, IFormatProvider ) \n" +
            "generates the following output. The provider type, " +
            "argument type, \nand argument value are displayed." );
        Console.WriteLine( "\nNote: The IFormatProvider object is " +
            "not called for Boolean, String, \nChar, TimeSpan, " +
            "and non-numeric Object." );

        // The format provider is called for these conversions.
        Console.WriteLine( );
        converted = Convert.ToString( Int32A, provider );
        Console.WriteLine( "int      {0}", converted );
        converted = Convert.ToString( DoubleA, provider );
        Console.WriteLine( "double   {0}", converted );
        converted = Convert.ToString( ObjDouble, provider );
        Console.WriteLine( "object   {0}", converted );
        converted = Convert.ToString( DayTimeA, provider );
        Console.WriteLine( "DateTime {0}", converted );

        // The format provider is not called for these conversions.
        Console.WriteLine( );
        converted = Convert.ToString( BoolA, provider );
        Console.WriteLine( "bool     {0}", converted );
        converted = Convert.ToString( StringA, provider );
        Console.WriteLine( "string   {0}", converted );
        converted = Convert.ToString( CharA, provider );
        Console.WriteLine( "char     {0}", converted );
        converted = Convert.ToString( TSpanA, provider );
        Console.WriteLine( "TimeSpan {0}", converted );
        converted = Convert.ToString( ObjOther, provider );
        Console.WriteLine( "object   {0}", converted );
    }
}

/*
This example of Convert.ToString( non-numeric, IFormatProvider )
generates the following output. The provider type, argument type,
and argument value are displayed.

Note: The IFormatProvider object is not called for Boolean, String,
Char, TimeSpan, and non-numeric Object.

System.Globalization.NumberFormatInfo   int      -252645135
System.Globalization.NumberFormatInfo   double   61680.3855
System.Globalization.NumberFormatInfo   object   -98765.4321
System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM

bool     True
string   Qwerty
char     $
TimeSpan 00:18:00
object   DummyProvider

*/ 
' Example of Convert.ToString( non-numeric types, IFormatProvider ).
Imports System.Globalization

' An instance of this class can be passed to methods that require 
' an IFormatProvider.
Public Class DummyProvider
    Implements IFormatProvider

    ' Normally, GetFormat returns an object of the requested type
    ' (usually itself) if it is able; otherwise, it returns Nothing. 
    Public Function GetFormat( argType As Type ) As Object _
        Implements IFormatProvider.GetFormat

        ' Here, the type of argType is displayed, and GetFormat
        ' always returns Nothing.
        Console.Write( "{0,-40}", argType.ToString( ) )
        Return Nothing

    End Function 
End Class

Module ConvertNonNumericProviderDemo

    Sub Main( )

        ' Create an instance of the IFormatProvider.
        Dim provider    As New DummyProvider( )
        Dim converted   As String

        ' Convert these values using DummyProvider.
        Dim Int32A      As Integer  = -252645135   
        Dim DoubleA     As Double   = 61680.3855
        Dim ObjDouble   As Object   = CType( -98765.4321, Object )
        Dim DayTimeA    As DateTime = _
                            new DateTime( 2001, 9, 11, 13, 45, 0 )

        Dim BoolA       As Boolean  = True
        Dim StringA     As String   = "Qwerty"
        Dim CharA       As Char     = "$"c
        Dim TSpanA      As TimeSpan = New TimeSpan( 0, 18, 0 )
        Dim ObjOther    As Object   = CType( provider, Object )

        Console.WriteLine( "This example of " & _
            "Convert.ToString( non-numeric, IFormatProvider ) " & _
            vbCrLf & "generates the following output. The " & _
            "provider type, argument type, " & vbCrLf & "and " & _
            "argument value are displayed." )
        Console.WriteLine( vbCrLf & _
            "Note: The IFormatProvider object is not called for " & _
            "Boolean, String, " & vbCrLf & "Char, TimeSpan, " & _
            "and non-numeric Object." )

        ' The format provider is called for these conversions.
        Console.WriteLine( )
        converted =  Convert.ToString( Int32A, provider )
        Console.WriteLine( "Int32    {0}", converted )
        converted =  Convert.ToString( DoubleA, provider )
        Console.WriteLine( "Double   {0}", converted )
        converted =  Convert.ToString( ObjDouble, provider )
        Console.WriteLine( "Object   {0}", converted )
        converted =  Convert.ToString( DayTimeA, provider )
        Console.WriteLine( "DateTime {0}", converted )

        ' The format provider is not called for these conversions.
        Console.WriteLine( )
        converted =  Convert.ToString( BoolA, provider )
        Console.WriteLine( "Boolean  {0}", converted )
        converted =  Convert.ToString( StringA, provider )
        Console.WriteLine( "String   {0}", converted )
        converted =  Convert.ToString( CharA, provider )
        Console.WriteLine( "Char     {0}", converted )
        converted =  Convert.ToString( TSpanA, provider )
        Console.WriteLine( "TimeSpan {0}", converted )
        converted =  Convert.ToString( ObjOther, provider )
        Console.WriteLine( "Object   {0}", converted )

    End Sub
End Module

' This example of Convert.ToString( non-numeric, IFormatProvider )
' generates the following output. The provider type, argument type,
' and argument value are displayed.
'
' Note: The IFormatProvider object is not called for Boolean, String,
' Char, TimeSpan, and non-numeric Object.
' 
' System.Globalization.NumberFormatInfo   Int32    -252645135
' System.Globalization.NumberFormatInfo   Double   61680.3855
' System.Globalization.NumberFormatInfo   Object   -98765.4321
' System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM
' 
' Boolean  True
' String   Qwerty
' Char     $
' TimeSpan 00:18:00
' Object   DummyProvider

ToString(UInt16, IFormatProvider) ToString(UInt16, IFormatProvider) ToString(UInt16, IFormatProvider) ToString(UInt16, IFormatProvider)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 16-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::UInt16 value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static string ToString (ushort value, IFormatProvider provider);
static member ToString : uint16 * IFormatProvider -> string
Public Shared Function ToString (value As UShort, provider As IFormatProvider) As String

Paramètres

value
UInt16 UInt16 UInt16 UInt16

Entier non signé 16 bits à convertir.The 16-bit unsigned integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la ToString(UInt16, IFormatProvider) méthode pour convertir une valeur d’entier non signé 16 bits en sa représentation sous forme de chaîne équivalente.It then calls the ToString(UInt16, IFormatProvider) method to convert a 16-bit unsigned integer value to its equivalent string representation. La conversion utilise à la fois la culture dite indifférente et l’objet personnalisé NumberFormatInfo .The conversion uses both the invariant culture and the custom NumberFormatInfo object. La sortie indique que ces informations de mise en forme ne sont pas utilisées car, par défaut, le spécificateur de format "G" n’inclut pas de signe positif avec des valeurs positives.The output indicates that this formatting information is not used, because by default the "G" format specifier does not include a positive sign with positive values.

ushort number = UInt16.MaxValue;
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

Console.WriteLine("{0,-6}  -->  {1,6}",
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture),
                  Convert.ToString(number, nfi));
// The example displays the following output:
//       65535   -->   65535
Dim number As UShort = UInt16.MaxValue
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"

Console.WriteLine("{0,-6}  -->  {1,6}", _
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), _
                  Convert.ToString(number, nfi))
' The example displays the following output:
'       65535   -->   65535

Remarques

Cette implémentation est identique à UInt16.ToString(IFormatProvider).This implementation is identical to UInt16.ToString(IFormatProvider).

ToString(UInt32, IFormatProvider) ToString(UInt32, IFormatProvider) ToString(UInt32, IFormatProvider) ToString(UInt32, IFormatProvider)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 32-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::UInt32 value, IFormatProvider ^ provider);
[System.CLSCompliant(false)]
public static string ToString (uint value, IFormatProvider provider);
static member ToString : uint32 * IFormatProvider -> string
Public Shared Function ToString (value As UInteger, provider As IFormatProvider) As String

Paramètres

value
UInt32 UInt32 UInt32 UInt32

Entier non signé 32 bits à convertir.The 32-bit unsigned integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la ToString(UInt32, IFormatProvider) méthode pour convertir une valeur entière non signée en sa représentation sous forme de chaîne équivalente.It then calls the ToString(UInt32, IFormatProvider) method to convert an unsigned integer value to its equivalent string representation. La conversion utilise à la fois la culture dite indifférente et l’objet personnalisé NumberFormatInfo .The conversion uses both the invariant culture and the custom NumberFormatInfo object. La sortie indique que ces informations de mise en forme ne sont pas utilisées car, par défaut, le spécificateur de format "G" n’inclut pas de signe positif avec des valeurs positives.The output indicates that this formatting information is not used, because by default the "G" format specifier does not include a positive sign with positive values.

uint number = UInt32.MaxValue;
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

Console.WriteLine("{0,-8}  -->  {1,8}",
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture),
                  Convert.ToString(number, nfi));
// The example displays the following output:
//       4294967295  -->  4294967295
Dim number As UInteger = UInt32.MaxValue
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"

Console.WriteLine("{0,-8}  -->  {1,8}", _
                  Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), _
                  Convert.ToString(number, nfi))
' The example displays the following output:
'       4294967295  -->  4294967295

Remarques

Cette implémentation est identique à UInt32.ToString(IFormatProvider).This implementation is identical to UInt32.ToString(IFormatProvider).

ToString(Char, IFormatProvider) ToString(Char, IFormatProvider) ToString(Char, IFormatProvider) ToString(Char, IFormatProvider)

Convertit la valeur du caractère Unicode spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified Unicode character to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(char value, IFormatProvider ^ provider);
public static string ToString (char value, IFormatProvider provider);
static member ToString : char * IFormatProvider -> string
Public Shared Function ToString (value As Char, provider As IFormatProvider) As String

Paramètres

value
Char Char Char Char

Caractère Unicode à convertir.The Unicode character to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information. Ce paramètre est ignoré.This parameter is ignored.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit Char une valeur String en avec la ToString méthode, à l' IFormatProvider aide d’un objet qui affiche le type du fournisseur de format pour lequel elle est appelée.The following example converts a Char value to a String with the ToString method, using an IFormatProvider object that displays the type of the format provider for which it is called. L’exemple montre que l' IFormatProvider objet n’est pas référencé.The example shows that the IFormatProvider object is not referenced.

// Example of Convert::ToString( non-numeric types, IFormatProvider ).
using namespace System;
using namespace System::Globalization;

#define null (Object^)0

// An instance of this class can be passed to methods that require 
// an IFormatProvider.
ref class DummyProvider: public IFormatProvider
{
public:

   // Normally, GetFormat returns an object of the requested type
   // (usually itself) if it is able; otherwise, it returns Nothing. 
   virtual Object^ GetFormat( Type^ argType )
   {
      // Here, the type of argType is displayed, and GetFormat
      // always returns Nothing.
      Console::Write( "{0,-40}", argType->ToString() );
      return null;
   }
};

int main()
{
   // Create an instance of the IFormatProvider.
   DummyProvider^ provider = gcnew DummyProvider;
   String^ converted;

   // Convert these values using DummyProvider.
   int Int32A = -252645135;
   double DoubleA = 61680.3855;
   Object^ ObjDouble =  -98765.4321;
   DateTime DayTimeA = DateTime(2001,9,11,13,45,0);
   bool BoolA = true;
   String^ StringA = "Qwerty";
   Char CharA = '$';
   TimeSpan TSpanA = TimeSpan(0,18,0);
   Object^ ObjOther = static_cast<Object^>(provider);
   Console::WriteLine( "This example of "
   "Convert::ToString( non-numeric, IFormatProvider* ) \n"
   "generates the following output. The provider type, "
   "argument type, \nand argument value are displayed." );
   Console::WriteLine( "\nNote: The IFormatProvider object is "
   "not called for Boolean, String, \nChar, TimeSpan, "
   "and non-numeric Object." );

   // The format provider is called for these conversions.
   Console::WriteLine();
   converted = Convert::ToString( Int32A, provider );
   Console::WriteLine( "int      {0}", converted );
   converted = Convert::ToString( DoubleA, provider );
   Console::WriteLine( "double   {0}", converted );
   converted = Convert::ToString( ObjDouble, provider );
   Console::WriteLine( "Object   {0}", converted );
   converted = Convert::ToString( DayTimeA, provider );
   Console::WriteLine( "DateTime {0}", converted );

   // The format provider is not called for these conversions.
   Console::WriteLine();
   converted = Convert::ToString( BoolA, provider );
   Console::WriteLine( "bool     {0}", converted );
   converted = Convert::ToString( StringA, provider );
   Console::WriteLine( "String   {0}", converted );
   converted = Convert::ToString( CharA, provider );
   Console::WriteLine( "Char     {0}", converted );
   converted = Convert::ToString( TSpanA, provider );
   Console::WriteLine( "TimeSpan {0}", converted );
   converted = Convert::ToString( ObjOther, provider );
   Console::WriteLine( "Object   {0}", converted );
}

/*
This example of Convert::ToString( non-numeric, IFormatProvider* )
generates the following output. The provider type, argument type,
and argument value are displayed.

Note: The IFormatProvider object is not called for Boolean, String,
Char, TimeSpan, and non-numeric Object.

System.Globalization.NumberFormatInfo   int      -252645135
System.Globalization.NumberFormatInfo   double   61680.3855
System.Globalization.NumberFormatInfo   Object   -98765.4321
System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM

bool     True
String   Qwerty
Char     $
TimeSpan 00:18:00
Object   DummyProvider
*/
// Example of Convert.ToString( non-numeric types, IFormatProvider ).
using System;
using System.Globalization;

// An instance of this class can be passed to methods that require 
// an IFormatProvider.
public class DummyProvider : IFormatProvider
{
    // Normally, GetFormat returns an object of the requested type
    // (usually itself) if it is able; otherwise, it returns Nothing. 
    public object GetFormat( Type argType )
    {
        // Here, the type of argType is displayed, and GetFormat
        // always returns Nothing.
        Console.Write( "{0,-40}", argType.ToString( ) );
        return null;
    }
}

class ConvertNonNumericProviderDemo
{
    static void Main( )
    {
        // Create an instance of the IFormatProvider.
        DummyProvider provider = new DummyProvider( );
        string converted;

        // Convert these values using DummyProvider.
        int      Int32A     = -252645135;
        double   DoubleA    = 61680.3855;
        object   ObjDouble  = (object)( -98765.4321 );
        DateTime DayTimeA   = new DateTime( 2001, 9, 11, 13, 45, 0 );

        bool     BoolA      = true;
        string   StringA    = "Qwerty";
        char     CharA      = '$';
        TimeSpan TSpanA     = new TimeSpan( 0, 18, 0 );
        object   ObjOther   = (object)provider;

        Console.WriteLine( "This example of " +
            "Convert.ToString( non-numeric, IFormatProvider ) \n" +
            "generates the following output. The provider type, " +
            "argument type, \nand argument value are displayed." );
        Console.WriteLine( "\nNote: The IFormatProvider object is " +
            "not called for Boolean, String, \nChar, TimeSpan, " +
            "and non-numeric Object." );

        // The format provider is called for these conversions.
        Console.WriteLine( );
        converted = Convert.ToString( Int32A, provider );
        Console.WriteLine( "int      {0}", converted );
        converted = Convert.ToString( DoubleA, provider );
        Console.WriteLine( "double   {0}", converted );
        converted = Convert.ToString( ObjDouble, provider );
        Console.WriteLine( "object   {0}", converted );
        converted = Convert.ToString( DayTimeA, provider );
        Console.WriteLine( "DateTime {0}", converted );

        // The format provider is not called for these conversions.
        Console.WriteLine( );
        converted = Convert.ToString( BoolA, provider );
        Console.WriteLine( "bool     {0}", converted );
        converted = Convert.ToString( StringA, provider );
        Console.WriteLine( "string   {0}", converted );
        converted = Convert.ToString( CharA, provider );
        Console.WriteLine( "char     {0}", converted );
        converted = Convert.ToString( TSpanA, provider );
        Console.WriteLine( "TimeSpan {0}", converted );
        converted = Convert.ToString( ObjOther, provider );
        Console.WriteLine( "object   {0}", converted );
    }
}

/*
This example of Convert.ToString( non-numeric, IFormatProvider )
generates the following output. The provider type, argument type,
and argument value are displayed.

Note: The IFormatProvider object is not called for Boolean, String,
Char, TimeSpan, and non-numeric Object.

System.Globalization.NumberFormatInfo   int      -252645135
System.Globalization.NumberFormatInfo   double   61680.3855
System.Globalization.NumberFormatInfo   object   -98765.4321
System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM

bool     True
string   Qwerty
char     $
TimeSpan 00:18:00
object   DummyProvider

*/ 
' Example of Convert.ToString( non-numeric types, IFormatProvider ).
Imports System.Globalization

' An instance of this class can be passed to methods that require 
' an IFormatProvider.
Public Class DummyProvider
    Implements IFormatProvider

    ' Normally, GetFormat returns an object of the requested type
    ' (usually itself) if it is able; otherwise, it returns Nothing. 
    Public Function GetFormat( argType As Type ) As Object _
        Implements IFormatProvider.GetFormat

        ' Here, the type of argType is displayed, and GetFormat
        ' always returns Nothing.
        Console.Write( "{0,-40}", argType.ToString( ) )
        Return Nothing

    End Function 
End Class

Module ConvertNonNumericProviderDemo

    Sub Main( )

        ' Create an instance of the IFormatProvider.
        Dim provider    As New DummyProvider( )
        Dim converted   As String

        ' Convert these values using DummyProvider.
        Dim Int32A      As Integer  = -252645135   
        Dim DoubleA     As Double   = 61680.3855
        Dim ObjDouble   As Object   = CType( -98765.4321, Object )
        Dim DayTimeA    As DateTime = _
                            new DateTime( 2001, 9, 11, 13, 45, 0 )

        Dim BoolA       As Boolean  = True
        Dim StringA     As String   = "Qwerty"
        Dim CharA       As Char     = "$"c
        Dim TSpanA      As TimeSpan = New TimeSpan( 0, 18, 0 )
        Dim ObjOther    As Object   = CType( provider, Object )

        Console.WriteLine( "This example of " & _
            "Convert.ToString( non-numeric, IFormatProvider ) " & _
            vbCrLf & "generates the following output. The " & _
            "provider type, argument type, " & vbCrLf & "and " & _
            "argument value are displayed." )
        Console.WriteLine( vbCrLf & _
            "Note: The IFormatProvider object is not called for " & _
            "Boolean, String, " & vbCrLf & "Char, TimeSpan, " & _
            "and non-numeric Object." )

        ' The format provider is called for these conversions.
        Console.WriteLine( )
        converted =  Convert.ToString( Int32A, provider )
        Console.WriteLine( "Int32    {0}", converted )
        converted =  Convert.ToString( DoubleA, provider )
        Console.WriteLine( "Double   {0}", converted )
        converted =  Convert.ToString( ObjDouble, provider )
        Console.WriteLine( "Object   {0}", converted )
        converted =  Convert.ToString( DayTimeA, provider )
        Console.WriteLine( "DateTime {0}", converted )

        ' The format provider is not called for these conversions.
        Console.WriteLine( )
        converted =  Convert.ToString( BoolA, provider )
        Console.WriteLine( "Boolean  {0}", converted )
        converted =  Convert.ToString( StringA, provider )
        Console.WriteLine( "String   {0}", converted )
        converted =  Convert.ToString( CharA, provider )
        Console.WriteLine( "Char     {0}", converted )
        converted =  Convert.ToString( TSpanA, provider )
        Console.WriteLine( "TimeSpan {0}", converted )
        converted =  Convert.ToString( ObjOther, provider )
        Console.WriteLine( "Object   {0}", converted )

    End Sub
End Module

' This example of Convert.ToString( non-numeric, IFormatProvider )
' generates the following output. The provider type, argument type,
' and argument value are displayed.
'
' Note: The IFormatProvider object is not called for Boolean, String,
' Char, TimeSpan, and non-numeric Object.
' 
' System.Globalization.NumberFormatInfo   Int32    -252645135
' System.Globalization.NumberFormatInfo   Double   61680.3855
' System.Globalization.NumberFormatInfo   Object   -98765.4321
' System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM
' 
' Boolean  True
' String   Qwerty
' Char     $
' TimeSpan 00:18:00
' Object   DummyProvider

Remarques

Cette implémentation est identique à Char.ToString().This implementation is identical to Char.ToString(). Le provider paramètre est ignoré.The provider parameter is ignored.

ToString(Int64, IFormatProvider) ToString(Int64, IFormatProvider) ToString(Int64, IFormatProvider) ToString(Int64, IFormatProvider)

Convertit la valeur de l'entier signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 64-bit signed integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(long value, IFormatProvider ^ provider);
public static string ToString (long value, IFormatProvider provider);
static member ToString : int64 * IFormatProvider -> string
Public Shared Function ToString (value As Long, provider As IFormatProvider) As String

Paramètres

value
Int64 Int64 Int64 Int64

Entier signé 64 bits à convertir.The 64-bit signed integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant définit une classe NumberFormatInfo personnalisée qui définit son signe négatif comme chaîne « ~ » et son signe positif comme chaîne « ! ».The following example defines a custom NumberFormatInfo class that defines its negative sign as the string "~" and its positive sign as the string "!". Il appelle ensuite la ToString(Int64, IFormatProvider) méthode pour convertir chaque élément d’un tableau d’entiers long en sa représentation sous forme de chaîne équivalente.It then calls the ToString(Int64, IFormatProvider) method to convert each element in a long integer array to its equivalent string representation. La conversion utilise la culture dite indifférente, ainsi que NumberFormatInfo l’objet personnalisé.The conversion uses the invariant culture as well as the custom NumberFormatInfo object.

long[] numbers = { ((long) Int32.MinValue) * 2, ((long) Int32.MaxValue) * 2};
System.Globalization.NumberFormatInfo nfi = new System.Globalization.NumberFormatInfo();
nfi.NegativeSign = "~";
nfi.PositiveSign = "!";

foreach (long number in numbers)
   Console.WriteLine("{0,-12}  -->  {1,12}", 
                     Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), 
                     Convert.ToString(number, nfi));
// The example displays the following output:
//       -4294967296  -->  ~4294967296
//       4294967294  -->  4294967294
Dim numbers() As Long = { CLng(Int32.MinValue) * 2, CLng(Int32.MaxValue) * 2 }
Dim nfi As New System.Globalization.NumberFormatInfo()
nfi.NegativeSign = "~"
nfi.PositiveSign = "!"

For Each number As Long In numbers
   Console.WriteLine("{0,-12}  -->  {1,12}", _
                     Convert.ToString(number, System.Globalization.CultureInfo.InvariantCulture), _
                     Convert.ToString(number, nfi))
Next
' The example displays the following output:
'       -4294967296  -->  ~4294967296
'       4294967294   -->  4294967294

Remarques

Cette implémentation est identique à Int64.ToString(IFormatProvider).This implementation is identical to Int64.ToString(IFormatProvider).

ToString(Byte, Int32) ToString(Byte, Int32) ToString(Byte, Int32) ToString(Byte, Int32)

Convertit la valeur d'un entier non signé 8 bits en sa représentation sous forme de chaîne équivalente dans une base spécifiée.Converts the value of an 8-bit unsigned integer to its equivalent string representation in a specified base.

public:
 static System::String ^ ToString(System::Byte value, int toBase);
public static string ToString (byte value, int toBase);
static member ToString : byte * int -> string
Public Shared Function ToString (value As Byte, toBase As Integer) As String

Paramètres

value
Byte Byte Byte Byte

Entier non signé 8 bits à convertir.The 8-bit unsigned integer to convert.

toBase
Int32 Int32 Int32 Int32

Base de la valeur de retour, qui doit être 2, 8, 10 ou 16.The base of the return value, which must be 2, 8, 10, or 16.

Retours

Représentation sous forme de chaîne de value en base toBase.The string representation of value in base toBase.

Exceptions

toBase n’a pas la valeur 2, 8, 10 ou 16.toBase is not 2, 8, 10, or 16.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’octets en sa représentation sous forme de chaîne binaire, hexadécimale, décimale et hexadécimale équivalente.The following example converts each element in a byte array to its equivalent binary, hexadecimal, decimal, and hexadecimal string representations.

int[] bases = { 2, 8, 10, 16};
byte[] numbers = { Byte.MinValue, 12, 103, Byte.MaxValue};

foreach (int baseValue in bases)
{
   Console.WriteLine("Base {0} conversion:", baseValue);
   foreach (byte number in numbers)
   {
      Console.WriteLine("   {0,-5}  -->  0x{1}", 
                        number, Convert.ToString(number, baseValue));
   }
}
// The example displays the following output:
//       Base 2 conversion:
//          0      -->  0x0
//          12     -->  0x1100
//          103    -->  0x1100111
//          255    -->  0x11111111
//       Base 8 conversion:
//          0      -->  0x0
//          12     -->  0x14
//          103    -->  0x147
//          255    -->  0x377
//       Base 10 conversion:
//          0      -->  0x0
//          12     -->  0x12
//          103    -->  0x103
//          255    -->  0x255
//       Base 16 conversion:
//          0      -->  0x0
//          12     -->  0xc
//          103    -->  0x67
//          255    -->  0xff
Dim bases() As Integer = { 2, 8, 10, 16}
Dim numbers() As Byte = { Byte.MinValue, 12, 103, Byte.MaxValue}

For Each base As Integer In bases
   Console.WriteLine("Base {0} conversion:", base)
   For Each number As Byte In numbers
      Console.WriteLine("   {0,-5}  -->  0x{1}", _
                        number, Convert.ToString(number, base))
   Next
Next
' The example displays the following output:
'       Base 2 conversion:
'          0      -->  0x0
'          12     -->  0x1100
'          103    -->  0x1100111
'          255    -->  0x11111111
'       Base 8 conversion:
'          0      -->  0x0
'          12     -->  0x14
'          103    -->  0x147
'          255    -->  0x377
'       Base 10 conversion:
'          0      -->  0x0
'          12     -->  0x12
'          103    -->  0x103
'          255    -->  0x255
'       Base 16 conversion:
'          0      -->  0x0
'          12     -->  0xc
'          103    -->  0x67
'          255    -->  0xff
let bases = [2; 8; 10; 16]
let numbers = [ Byte.MinValue; 12uy; 103uy; Byte.MaxValue ]

for baseValue in bases do
    printfn "Base %i conversion:" baseValue
    for number in numbers do
        printfn "   % -5i  -->  0x%s" number (Convert.ToString (number, baseValue))
// The example displays the following output:
//     Base 2 conversion:
//         0     -->  0x0
//         12    -->  0x1100
//         103   -->  0x1100111
//         255   -->  0x11111111
//     Base 8 conversion:
//         0     -->  0x0
//         12    -->  0x14
//         103   -->  0x147
//         255   -->  0x377
//     Base 10 conversion:
//         0     -->  0x0
//         12    -->  0x12
//         103   -->  0x103
//         255   -->  0x255
//     Base 16 conversion:
//         0     -->  0x0
//         12    -->  0xc
//         103   -->  0x67
//         255   -->  0xff

Remarques

Si toBase n’est pas égal à 10, la chaîne retournée par Convert.ToString(Byte, Int32) la méthode value représente uniquement son amplitude.If toBase does not equal 10, the string that is returned by the Convert.ToString(Byte, Int32) method represents value by its magnitude only. Si la méthode est appelée pour créer une chaîne qui sera ensuite reconvertie en nombre, une méthode correspondante qui suppose une représentation numérique de magnitude uniquement doit être appelée pour effectuer la conversion.If the method is called to create a string that will later be converted back to a number, a corresponding method that assumes a magnitude-only numeric representation should be called to perform the conversion. Ces méthodes incluent Convert.ToByte(String, Int32) ou Byte.Parse(String, NumberStyles).Such methods include Convert.ToByte(String, Int32) or Byte.Parse(String, NumberStyles).

ToString(UInt64) ToString(UInt64) ToString(UInt64) ToString(UInt64)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 64-bit unsigned integer to its equivalent string representation.

public:
 static System::String ^ ToString(System::UInt64 value);
[System.CLSCompliant(false)]
public static string ToString (ulong value);
static member ToString : uint64 -> string
Public Shared Function ToString (value As ULong) As String

Paramètres

value
UInt64 UInt64 UInt64 UInt64

Entier non signé 64 bits à convertir.The 64-bit unsigned integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers long non signé en sa représentation sous forme de chaîne équivalente.The following example converts each element in an unsigned long integer array to its equivalent string representation.

ulong[] numbers = { UInt64.MinValue, 1031, 189045, UInt64.MaxValue };
string result;

foreach (ulong number in numbers)
{
   result = Convert.ToString(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt64 value 0 to the String value 0.
//    Converted the UInt64 value 1031 to the String value 1031.
//    Converted the UInt64 value 189045 to the String value 189045.
//    Converted the UInt64 value 18446744073709551615 to the String value 18446744073709551615.
Dim numbers() As ULong = { UInt64.MinValue, 1031, 189045, UInt64.MaxValue }
Dim result As String

For Each number As ULong In numbers
   result = Convert.ToString(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt64 value 0 to the String value 0.
'    Converted the UInt64 value 1031 to the String value 1031.
'    Converted the UInt64 value 189045 to the String value 189045.
'    Converted the UInt64 value 18446744073709551615 to the String value 18446744073709551615.

Remarques

Cette implémentation est identique à UInt64.ToString().This implementation is identical to UInt64.ToString().

ToString(Boolean, IFormatProvider) ToString(Boolean, IFormatProvider) ToString(Boolean, IFormatProvider) ToString(Boolean, IFormatProvider)

Convertit la valeur booléenne spécifiée en sa représentation sous forme de chaîne équivalente.Converts the specified Boolean value to its equivalent string representation.

public:
 static System::String ^ ToString(bool value, IFormatProvider ^ provider);
public static string ToString (bool value, IFormatProvider provider);
static member ToString : bool * IFormatProvider -> string
Public Shared Function ToString (value As Boolean, provider As IFormatProvider) As String

Paramètres

value
Boolean Boolean Boolean Boolean

Valeur booléenne à convertir.The Boolean value to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Instance d'un objet.An instance of an object. Ce paramètre est ignoré.This parameter is ignored.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit Boolean une valeur String en avec la ToString méthode, à l' IFormatProvider aide d’un objet qui affiche le type du fournisseur de format pour lequel elle est appelée.The following example converts a Boolean value to a String with the ToString method, using an IFormatProvider object that displays the type of the format provider for which it is called. L’exemple montre que l' IFormatProvider objet n’est pas référencé.The example shows that the IFormatProvider object is not referenced.

// Example of Convert::ToString( non-numeric types, IFormatProvider ).
using namespace System;
using namespace System::Globalization;

#define null (Object^)0

// An instance of this class can be passed to methods that require 
// an IFormatProvider.
ref class DummyProvider: public IFormatProvider
{
public:

   // Normally, GetFormat returns an object of the requested type
   // (usually itself) if it is able; otherwise, it returns Nothing. 
   virtual Object^ GetFormat( Type^ argType )
   {
      // Here, the type of argType is displayed, and GetFormat
      // always returns Nothing.
      Console::Write( "{0,-40}", argType->ToString() );
      return null;
   }
};

int main()
{
   // Create an instance of the IFormatProvider.
   DummyProvider^ provider = gcnew DummyProvider;
   String^ converted;

   // Convert these values using DummyProvider.
   int Int32A = -252645135;
   double DoubleA = 61680.3855;
   Object^ ObjDouble =  -98765.4321;
   DateTime DayTimeA = DateTime(2001,9,11,13,45,0);
   bool BoolA = true;
   String^ StringA = "Qwerty";
   Char CharA = '$';
   TimeSpan TSpanA = TimeSpan(0,18,0);
   Object^ ObjOther = static_cast<Object^>(provider);
   Console::WriteLine( "This example of "
   "Convert::ToString( non-numeric, IFormatProvider* ) \n"
   "generates the following output. The provider type, "
   "argument type, \nand argument value are displayed." );
   Console::WriteLine( "\nNote: The IFormatProvider object is "
   "not called for Boolean, String, \nChar, TimeSpan, "
   "and non-numeric Object." );

   // The format provider is called for these conversions.
   Console::WriteLine();
   converted = Convert::ToString( Int32A, provider );
   Console::WriteLine( "int      {0}", converted );
   converted = Convert::ToString( DoubleA, provider );
   Console::WriteLine( "double   {0}", converted );
   converted = Convert::ToString( ObjDouble, provider );
   Console::WriteLine( "Object   {0}", converted );
   converted = Convert::ToString( DayTimeA, provider );
   Console::WriteLine( "DateTime {0}", converted );

   // The format provider is not called for these conversions.
   Console::WriteLine();
   converted = Convert::ToString( BoolA, provider );
   Console::WriteLine( "bool     {0}", converted );
   converted = Convert::ToString( StringA, provider );
   Console::WriteLine( "String   {0}", converted );
   converted = Convert::ToString( CharA, provider );
   Console::WriteLine( "Char     {0}", converted );
   converted = Convert::ToString( TSpanA, provider );
   Console::WriteLine( "TimeSpan {0}", converted );
   converted = Convert::ToString( ObjOther, provider );
   Console::WriteLine( "Object   {0}", converted );
}

/*
This example of Convert::ToString( non-numeric, IFormatProvider* )
generates the following output. The provider type, argument type,
and argument value are displayed.

Note: The IFormatProvider object is not called for Boolean, String,
Char, TimeSpan, and non-numeric Object.

System.Globalization.NumberFormatInfo   int      -252645135
System.Globalization.NumberFormatInfo   double   61680.3855
System.Globalization.NumberFormatInfo   Object   -98765.4321
System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM

bool     True
String   Qwerty
Char     $
TimeSpan 00:18:00
Object   DummyProvider
*/
// Example of Convert.ToString( non-numeric types, IFormatProvider ).
using System;
using System.Globalization;

// An instance of this class can be passed to methods that require 
// an IFormatProvider.
public class DummyProvider : IFormatProvider
{
    // Normally, GetFormat returns an object of the requested type
    // (usually itself) if it is able; otherwise, it returns Nothing. 
    public object GetFormat( Type argType )
    {
        // Here, the type of argType is displayed, and GetFormat
        // always returns Nothing.
        Console.Write( "{0,-40}", argType.ToString( ) );
        return null;
    }
}

class ConvertNonNumericProviderDemo
{
    static void Main( )
    {
        // Create an instance of the IFormatProvider.
        DummyProvider provider = new DummyProvider( );
        string converted;

        // Convert these values using DummyProvider.
        int      Int32A     = -252645135;
        double   DoubleA    = 61680.3855;
        object   ObjDouble  = (object)( -98765.4321 );
        DateTime DayTimeA   = new DateTime( 2001, 9, 11, 13, 45, 0 );

        bool     BoolA      = true;
        string   StringA    = "Qwerty";
        char     CharA      = '$';
        TimeSpan TSpanA     = new TimeSpan( 0, 18, 0 );
        object   ObjOther   = (object)provider;

        Console.WriteLine( "This example of " +
            "Convert.ToString( non-numeric, IFormatProvider ) \n" +
            "generates the following output. The provider type, " +
            "argument type, \nand argument value are displayed." );
        Console.WriteLine( "\nNote: The IFormatProvider object is " +
            "not called for Boolean, String, \nChar, TimeSpan, " +
            "and non-numeric Object." );

        // The format provider is called for these conversions.
        Console.WriteLine( );
        converted = Convert.ToString( Int32A, provider );
        Console.WriteLine( "int      {0}", converted );
        converted = Convert.ToString( DoubleA, provider );
        Console.WriteLine( "double   {0}", converted );
        converted = Convert.ToString( ObjDouble, provider );
        Console.WriteLine( "object   {0}", converted );
        converted = Convert.ToString( DayTimeA, provider );
        Console.WriteLine( "DateTime {0}", converted );

        // The format provider is not called for these conversions.
        Console.WriteLine( );
        converted = Convert.ToString( BoolA, provider );
        Console.WriteLine( "bool     {0}", converted );
        converted = Convert.ToString( StringA, provider );
        Console.WriteLine( "string   {0}", converted );
        converted = Convert.ToString( CharA, provider );
        Console.WriteLine( "char     {0}", converted );
        converted = Convert.ToString( TSpanA, provider );
        Console.WriteLine( "TimeSpan {0}", converted );
        converted = Convert.ToString( ObjOther, provider );
        Console.WriteLine( "object   {0}", converted );
    }
}

/*
This example of Convert.ToString( non-numeric, IFormatProvider )
generates the following output. The provider type, argument type,
and argument value are displayed.

Note: The IFormatProvider object is not called for Boolean, String,
Char, TimeSpan, and non-numeric Object.

System.Globalization.NumberFormatInfo   int      -252645135
System.Globalization.NumberFormatInfo   double   61680.3855
System.Globalization.NumberFormatInfo   object   -98765.4321
System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM

bool     True
string   Qwerty
char     $
TimeSpan 00:18:00
object   DummyProvider

*/ 
' Example of Convert.ToString( non-numeric types, IFormatProvider ).
Imports System.Globalization

' An instance of this class can be passed to methods that require 
' an IFormatProvider.
Public Class DummyProvider
    Implements IFormatProvider

    ' Normally, GetFormat returns an object of the requested type
    ' (usually itself) if it is able; otherwise, it returns Nothing. 
    Public Function GetFormat( argType As Type ) As Object _
        Implements IFormatProvider.GetFormat

        ' Here, the type of argType is displayed, and GetFormat
        ' always returns Nothing.
        Console.Write( "{0,-40}", argType.ToString( ) )
        Return Nothing

    End Function 
End Class

Module ConvertNonNumericProviderDemo

    Sub Main( )

        ' Create an instance of the IFormatProvider.
        Dim provider    As New DummyProvider( )
        Dim converted   As String

        ' Convert these values using DummyProvider.
        Dim Int32A      As Integer  = -252645135   
        Dim DoubleA     As Double   = 61680.3855
        Dim ObjDouble   As Object   = CType( -98765.4321, Object )
        Dim DayTimeA    As DateTime = _
                            new DateTime( 2001, 9, 11, 13, 45, 0 )

        Dim BoolA       As Boolean  = True
        Dim StringA     As String   = "Qwerty"
        Dim CharA       As Char     = "$"c
        Dim TSpanA      As TimeSpan = New TimeSpan( 0, 18, 0 )
        Dim ObjOther    As Object   = CType( provider, Object )

        Console.WriteLine( "This example of " & _
            "Convert.ToString( non-numeric, IFormatProvider ) " & _
            vbCrLf & "generates the following output. The " & _
            "provider type, argument type, " & vbCrLf & "and " & _
            "argument value are displayed." )
        Console.WriteLine( vbCrLf & _
            "Note: The IFormatProvider object is not called for " & _
            "Boolean, String, " & vbCrLf & "Char, TimeSpan, " & _
            "and non-numeric Object." )

        ' The format provider is called for these conversions.
        Console.WriteLine( )
        converted =  Convert.ToString( Int32A, provider )
        Console.WriteLine( "Int32    {0}", converted )
        converted =  Convert.ToString( DoubleA, provider )
        Console.WriteLine( "Double   {0}", converted )
        converted =  Convert.ToString( ObjDouble, provider )
        Console.WriteLine( "Object   {0}", converted )
        converted =  Convert.ToString( DayTimeA, provider )
        Console.WriteLine( "DateTime {0}", converted )

        ' The format provider is not called for these conversions.
        Console.WriteLine( )
        converted =  Convert.ToString( BoolA, provider )
        Console.WriteLine( "Boolean  {0}", converted )
        converted =  Convert.ToString( StringA, provider )
        Console.WriteLine( "String   {0}", converted )
        converted =  Convert.ToString( CharA, provider )
        Console.WriteLine( "Char     {0}", converted )
        converted =  Convert.ToString( TSpanA, provider )
        Console.WriteLine( "TimeSpan {0}", converted )
        converted =  Convert.ToString( ObjOther, provider )
        Console.WriteLine( "Object   {0}", converted )

    End Sub
End Module

' This example of Convert.ToString( non-numeric, IFormatProvider )
' generates the following output. The provider type, argument type,
' and argument value are displayed.
'
' Note: The IFormatProvider object is not called for Boolean, String,
' Char, TimeSpan, and non-numeric Object.
' 
' System.Globalization.NumberFormatInfo   Int32    -252645135
' System.Globalization.NumberFormatInfo   Double   61680.3855
' System.Globalization.NumberFormatInfo   Object   -98765.4321
' System.Globalization.DateTimeFormatInfo DateTime 9/11/2001 1:45:00 PM
' 
' Boolean  True
' String   Qwerty
' Char     $
' TimeSpan 00:18:00
' Object   DummyProvider

Remarques

Cette implémentation est identique à Boolean.ToString.This implementation is identical to Boolean.ToString. Elle retourne Boolean.TrueString pour true les valeurs Boolean.FalseString et false pour les valeurs.It returns Boolean.TrueString for true values and Boolean.FalseString for false values.

ToString(Byte, IFormatProvider) ToString(Byte, IFormatProvider) ToString(Byte, IFormatProvider) ToString(Byte, IFormatProvider)

Convertit la valeur de l'entier non signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente à l'aide des informations de mise en forme spécifiées propres à la culture.Converts the value of the specified 8-bit unsigned integer to its equivalent string representation, using the specified culture-specific formatting information.

public:
 static System::String ^ ToString(System::Byte value, IFormatProvider ^ provider);
public static string ToString (byte value, IFormatProvider provider);
static member ToString : byte * IFormatProvider -> string
Public Shared Function ToString (value As Byte, provider As IFormatProvider) As String

Paramètres

value
Byte Byte Byte Byte

Entier non signé 8 bits à convertir.The 8-bit unsigned integer to convert.

provider
IFormatProvider IFormatProvider IFormatProvider IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.An object that supplies culture-specific formatting information.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’octets non signé en sa représentation sous forme de chaîne équivalente à l’aide des conventions de mise en forme des cultures en-US et fr-FR.The following example converts each element in an unsigned byte array to its equivalent string representation using the formatting conventions of the en-US and fr-FR cultures. Étant donné que le spécificateur "G" par défaut génère uniquement des chiffres décimaux dans la représentation sous forme de chaîne provider d’une valeur d’octet, le paramètre n’affecte pas la mise en forme de la chaîne retournée.Because the "G" specifier by default outputs only decimal digits in a byte value's string representation, the provider parameter does not affect the formatting of the returned string.

byte[] numbers = { 12, 100, Byte.MaxValue };
// Define the culture names used to display them.
string[] cultureNames = { "en-US", "fr-FR" };

foreach (byte number in numbers)
{
   Console.WriteLine("{0}:", Convert.ToString(number,
                             System.Globalization.CultureInfo.InvariantCulture));
   foreach (string cultureName in cultureNames)
   {
      System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo(cultureName);
      Console.WriteLine("   {0}: {1,20}",
                        culture.Name, Convert.ToString(number, culture));
   }
   Console.WriteLine();
}   
// The example displays the following output:
//       12:
//          en-US:                   12
//          fr-FR:                   12
//       
//       100:
//          en-US:                  100
//          fr-FR:                  100
//       
//       255:
//          en-US:                  255
//          fr-FR:                  255      
' Define an array of numbers to display.
Dim numbers() As Byte = { 12, 100, Byte.MaxValue }
' Define the culture names used to display them.
Dim cultureNames() As String = { "en-US", "fr-FR" }

For Each number As Byte In numbers
   Console.WriteLine("{0}:", Convert.ToString(number, _
                             System.Globalization.CultureInfo.InvariantCulture))
   For Each cultureName As String In cultureNames
      Dim culture As New System.Globalization.CultureInfo(cultureName)
      Console.WriteLine("   {0}: {1,20}", _
                        culture.Name, Convert.ToString(number, culture))
   Next
   Console.WriteLine()
Next   
' The example displays the following output:
'       12:
'          en-US:                   12
'          fr-FR:                   12
'       
'       100:
'          en-US:                  100
'          fr-FR:                  100
'       
'       255:
'          en-US:                  255
'          fr-FR:                  255      

Remarques

Cette implémentation est identique à Byte.ToString.This implementation is identical to Byte.ToString.

ToString(Boolean) ToString(Boolean) ToString(Boolean) ToString(Boolean)

Convertit la valeur booléenne spécifiée en sa représentation sous forme de chaîne équivalente.Converts the specified Boolean value to its equivalent string representation.

public:
 static System::String ^ ToString(bool value);
public static string ToString (bool value);
static member ToString : bool -> string
Public Shared Function ToString (value As Boolean) As String

Paramètres

value
Boolean Boolean Boolean Boolean

Valeur booléenne à convertir.The Boolean value to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant illustre la conversion de Boolean Stringen, à l’aide ToStringde.The following example illustrates the conversion of a Boolean to a String, using ToString. Il illustre également que la chaîne retournée par la conversion est égale Boolean.TrueString à ou Boolean.FalseStringà.It also illustrates that the string returned by the conversion equals either Boolean.TrueString or Boolean.FalseString.

bool falseFlag = false;
bool trueFlag = true;

Console.WriteLine(Convert.ToString(falseFlag));
Console.WriteLine(Convert.ToString(falseFlag).Equals(Boolean.FalseString));
Console.WriteLine(Convert.ToString(trueFlag));
Console.WriteLine(Convert.ToString(trueFlag).Equals(Boolean.TrueString));
// The example displays the following output:
//       False
//       True
//       True
//       True
Dim falseFlag As Boolean = False
Dim trueFlag As Boolean = True

Console.WriteLine(Convert.ToString(falseFlag))
Console.WriteLine(Convert.ToString(falseFlag).Equals(Boolean.FalseString))
Console.WriteLine(Convert.ToString(trueFlag))
Console.WriteLine(Convert.ToString(trueFlag).Equals(Boolean.TrueString))
' The example displays the following output:
'       False
'       True
'       True
'       True      
let falseFlag = false
let trueFlag = true

Console.WriteLine (Convert.ToString falseFlag)
Console.WriteLine (Convert.ToString falseFlag=Boolean.FalseString)
Console.WriteLine (Convert.ToString trueFlag)
Console.WriteLine (Convert.ToString trueFlag=Boolean.TrueString)
// The example displays the following output:
//       False
//       True
//       True
//       True

Remarques

Cette implémentation est identique à Boolean.ToString.This implementation is identical to Boolean.ToString. Elle retourne Boolean.TrueString pour true les valeurs Boolean.FalseString et false pour les valeurs.It returns Boolean.TrueString for true values and Boolean.FalseString for false values.

ToString(Byte) ToString(Byte) ToString(Byte) ToString(Byte)

Convertit la valeur de l'entier non signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 8-bit unsigned integer to its equivalent string representation.

public:
 static System::String ^ ToString(System::Byte value);
public static string ToString (byte value);
static member ToString : byte -> string
Public Shared Function ToString (value As Byte) As String

Paramètres

value
Byte Byte Byte Byte

Entier non signé 8 bits à convertir.The 8-bit unsigned integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque valeur d' Byte un tableau en une chaîne.The following example converts each value in a Byte array to a string.

using System;

public class Example
{
   public static void Main()
   {
      byte[] values = { Byte.MinValue, 12, 100, 179, Byte.MaxValue } ;

      foreach (var value in values)
         Console.WriteLine("{0,3} ({1}) --> {2}", value, 
                           value.GetType().Name, 
                           Convert.ToString(value));      
   }
}
// The example displays the following output:
//       0 (Byte) --> 0
//      12 (Byte) --> 12
//     100 (Byte) --> 100
//     179 (Byte) --> 179
//     255 (Byte) --> 255
Public Module Example
   Public Sub Main()
      Dim values() As Byte = { Byte.MinValue, 12, 100, 179, Byte.MaxValue }

      For Each value In values
         Console.WriteLine("{0,3} ({1}) --> {2}", value, 
                           value.GetType().Name, 
                           Convert.ToString(value))
      Next                           
   End Sub
End Module
' The example displays the following output:
'       0 (Byte) --> 0
'      12 (Byte) --> 12
'     100 (Byte) --> 100
'     179 (Byte) --> 179
'     255 (Byte) --> 255
let values = [ Byte.MinValue; 12uy; 100uy; 179uy; Byte.MaxValue ]
for value in values do
    printfn "% 4i (%s) --> %s" value (value.GetType().Name) (Convert.ToString value)
// The example displays the following output:
//       0 (Byte) --> 0
//      12 (Byte) --> 12
//     100 (Byte) --> 100
//     179 (Byte) --> 179
//     255 (Byte) --> 255

Remarques

Cette implémentation est identique à Byte.ToString().This implementation is identical to Byte.ToString().

ToString(Char) ToString(Char) ToString(Char) ToString(Char)

Convertit la valeur du caractère Unicode spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified Unicode character to its equivalent string representation.

public:
 static System::String ^ ToString(char value);
public static string ToString (char value);
static member ToString : char -> string
Public Shared Function ToString (value As Char) As String

Paramètres

value
Char Char Char Char

Caractère Unicode à convertir.The Unicode character to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit Char un Stringen.The following example converts a Char to a String.

public:
   void ConvertStringChar( String^ stringVal )
   {
      Char charVal = 'a';
      
      // A String must be one character long to convert to char.
      try
      {
         charVal = System::Convert::ToChar( stringVal );
         System::Console::WriteLine( " {0} as a char is {1}",
            stringVal, charVal );
      }
      catch ( System::FormatException^ ) 
      {
         System::Console::WriteLine(
            "The String is longer than one character." );
      }
      catch ( System::ArgumentNullException^ ) 
      {
         System::Console::WriteLine( "The String is 0." );
      }
      
      // A char to String conversion will always succeed.
      stringVal = System::Convert::ToString( charVal );
      System::Console::WriteLine( "The character as a String is {0}",
         stringVal );
   }
public void ConvertStringChar(string stringVal) {
	char charVal = 'a';

	// A string must be one character long to convert to char.
	try {
		charVal = System.Convert.ToChar(stringVal);
		System.Console.WriteLine("{0} as a char is {1}",
			stringVal, charVal);
	}
	catch (System.FormatException) {
		System.Console.WriteLine(
			"The string is longer than one character.");
	}
	catch (System.ArgumentNullException) {
		System.Console.WriteLine("The string is null.");
	}

	// A char to string conversion will always succeed.
	stringVal = System.Convert.ToString(charVal);
	System.Console.WriteLine("The character as a string is {0}",
			stringVal);
}
Public Sub ConvertStringChar(ByVal stringVal As String)
    Dim charVal As Char = "a"c

    ' A string must be one character long to convert to char.
    Try
        charVal = System.Convert.ToChar(stringVal)
        System.Console.WriteLine("{0} as a char is {1}", _
                                  stringVal, charVal)
    Catch exception As System.FormatException
        System.Console.WriteLine( _
         "The string is longer than one character.")
    Catch exception As System.ArgumentNullException
        System.Console.WriteLine("The string is null.")
    End Try

    ' A char to string conversion will always succeed.
    stringVal = System.Convert.ToString(charVal)
    System.Console.WriteLine("The character as a string is {0}", _
                              stringVal)
End Sub

Remarques

Cette implémentation est identique à Char.ToString.This implementation is identical to Char.ToString.

ToString(Decimal) ToString(Decimal) ToString(Decimal) ToString(Decimal)

Convertit la valeur du nombre décimal spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified decimal number to its equivalent string representation.

public:
 static System::String ^ ToString(System::Decimal value);
public static string ToString (decimal value);
static member ToString : decimal -> string
Public Shared Function ToString (value As Decimal) As String

Paramètres

value
Decimal Decimal Decimal Decimal

Nombre décimal à convertir.The decimal number to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit Decimal un Stringen.The following example converts a Decimal to a String.

public:
   void ConvertStringDecimal( String^ stringVal )
   {
      Decimal decimalVal = 0;

      try
      {
         decimalVal = System::Convert::ToDecimal( stringVal );
         System::Console::WriteLine( "The String as a decimal is {0}.",
         decimalVal );
      }
      catch ( System::OverflowException^ ) 
      {
         System::Console::WriteLine(
            "The conversion from String to decimal overflowed." );
      }
      catch ( System::FormatException^ ) 
      {
         System::Console::WriteLine(
            "The String is not formatted as a decimal." );
      }
      catch ( System::ArgumentNullException^ ) 
      {
         System::Console::WriteLine( "The String is 0." );
      }
      
      // Decimal to String conversion will not overflow.
      stringVal = System::Convert::ToString( decimalVal );
      System::Console::WriteLine(
         "The decimal as a String is {0}.", stringVal );
   }
public void ConvertStringDecimal(string stringVal) {
	decimal decimalVal = 0;
	
	try {
		decimalVal = System.Convert.ToDecimal(stringVal);
		System.Console.WriteLine(
			"The string as a decimal is {0}.", decimalVal);
	} 
	catch (System.OverflowException){
		System.Console.WriteLine(
			"The conversion from string to decimal overflowed.");
	}
	catch (System.FormatException) {
		System.Console.WriteLine(
			"The string is not formatted as a decimal.");
	}
	catch (System.ArgumentNullException) {
		System.Console.WriteLine(
			"The string is null.");
	}

	// Decimal to string conversion will not overflow.
	stringVal = System.Convert.ToString(decimalVal);
	System.Console.WriteLine(
		"The decimal as a string is {0}.", stringVal);
}	
Public Sub ConvertStringDecimal(ByVal stringVal As String)
    Dim decimalVal As Decimal = 0

    Try
        decimalVal = System.Convert.ToDecimal(stringVal)
        System.Console.WriteLine("The string as a decimal is {0}.", _
                                  decimalVal)
    Catch exception As System.OverflowException
        System.Console.WriteLine( _
            "Overflow in string-to-decimal conversion.")
    Catch exception As System.FormatException
        System.Console.WriteLine( _
            "The string is not formatted as a decimal.")
    Catch exception As System.ArgumentException
        System.Console.WriteLine("The string is null.")
    End Try

    ' Decimal to string conversion will not overflow.
    stringVal = System.Convert.ToString(decimalVal)
    System.Console.WriteLine("The decimal as a string is {0}.", _
                              stringVal)
End Sub

Remarques

Cette implémentation est identique à Decimal.ToString().This implementation is identical to Decimal.ToString().

ToString(Double) ToString(Double) ToString(Double) ToString(Double)

Convertit la valeur du nombre à virgule flottante double précision spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified double-precision floating-point number to its equivalent string representation.

public:
 static System::String ^ ToString(double value);
public static string ToString (double value);
static member ToString : double -> string
Public Shared Function ToString (value As Double) As String

Paramètres

value
Double Double Double Double

Nombre à virgule flottante double précision à convertir.The double-precision floating-point number to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit Double un Stringen.The following example converts a Double to a String.

public:
   void ConvertDoubleString( double doubleVal )
   {
      String^ stringVal;
      
      // A conversion from Double to String cannot overflow.
      stringVal = System::Convert::ToString( doubleVal );
      System::Console::WriteLine( " {0} as a String is: {1}",
         doubleVal, stringVal );
      try
      {
         doubleVal = System::Convert::ToDouble( stringVal );
         System::Console::WriteLine( " {0} as a double is: {1}",
         stringVal, doubleVal );
      }
      catch ( System::OverflowException^ ) 
      {
         System::Console::WriteLine( "Conversion from String-to-double overflowed." );
      }
      catch ( System::FormatException^ ) 
      {
         System::Console::WriteLine( "The String was not formatted as a double." );
      }
      catch ( System::ArgumentException^ ) 
      {
         System::Console::WriteLine( "The String pointed to null." );
      }
   }
public void ConvertDoubleString(double doubleVal) {
	
	string	stringVal;     

	// A conversion from Double to string cannot overflow.       
	stringVal = System.Convert.ToString(doubleVal);
	System.Console.WriteLine("{0} as a string is: {1}",
		doubleVal, stringVal);

	try {
		doubleVal = System.Convert.ToDouble(stringVal);
		System.Console.WriteLine("{0} as a double is: {1}",
			stringVal, doubleVal);
	} 
	catch (System.OverflowException) {
		System.Console.WriteLine(
			"Conversion from string-to-double overflowed.");
	}
	catch (System.FormatException) {
		System.Console.WriteLine(
			"The string was not formatted as a double.");
	}
	catch (System.ArgumentException) {
		System.Console.WriteLine(
			"The string pointed to null.");
	}
}
Public Sub ConvertDoubleString(ByVal doubleVal As Double)

    Dim stringVal As String

    ' A conversion from Double to String cannot overflow.       
    stringVal = System.Convert.ToString(doubleVal)
    System.Console.WriteLine("{0} as a String is: {1}", _
                              doubleVal, stringVal)

    Try
        doubleVal = System.Convert.ToDouble(stringVal)
        System.Console.WriteLine("{0} as a Double is: {1}", _
                                  stringVal, doubleVal)
    Catch exception As System.OverflowException
        System.Console.WriteLine( _
            "Overflow in String-to-Double conversion.")
    Catch exception As System.FormatException
        System.Console.WriteLine( _
            "The string is not formatted as a Double.")
    Catch exception As System.ArgumentException
        System.Console.WriteLine("The string is null.")
    End Try

End Sub

Remarques

Cette implémentation est identique à Double.ToString().This implementation is identical to Double.ToString().

ToString(Int16) ToString(Int16) ToString(Int16) ToString(Int16)

Convertit la valeur de l'entier signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 16-bit signed integer to its equivalent string representation.

public:
 static System::String ^ ToString(short value);
public static string ToString (short value);
static member ToString : int16 -> string
Public Shared Function ToString (value As Short) As String

Paramètres

value
Int16 Int16 Int16 Int16

Entier signé 16 bits à convertir.The 16-bit signed integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers 16 bits en sa représentation sous forme de chaîne équivalente.The following example converts each element in an array of 16-bit integers to its equivalent string representation.

short[] numbers = { Int16.MinValue, -138, 0, 19, Int16.MaxValue };
string result;

foreach (short number in numbers)
{
   result = Convert.ToString(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
}     
// The example displays the following output:
//    Converted the Int16 value -32768 to the String value -32768.
//    Converted the Int16 value -138 to the String value -138.
//    Converted the Int16 value 0 to the String value 0.
//    Converted the Int16 value 19 to the String value 19.
//    Converted the Int16 value 32767 to the String value 32767.
Dim numbers() As Short = { Int16.MinValue, -138, 0, 19, Int16.MaxValue }
Dim result As String

For Each number As Short In numbers
   result = Convert.ToString(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next     
' The example displays the following output:
'    Converted the Int16 value -32768 to the String value -32768.
'    Converted the Int16 value -138 to the String value -138.
'    Converted the Int16 value 0 to the String value 0.
'    Converted the Int16 value 19 to the String value 19.
'    Converted the Int16 value 32767 to the String value 32767.

Remarques

Cette implémentation est identique à Int16.ToString().This implementation is identical to Int16.ToString().

ToString(DateTime) ToString(DateTime) ToString(DateTime) ToString(DateTime)

Convertit la valeur du DateTime spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified DateTime to its equivalent string representation.

public:
 static System::String ^ ToString(DateTime value);
public static string ToString (DateTime value);
static member ToString : DateTime -> string
Public Shared Function ToString (value As DateTime) As String

Paramètres

value
DateTime DateTime DateTime DateTime

Valeur de date et heure à convertir.The date and time value to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d' DateTime une valeur String en valeur.The following example converts each element in an array of a DateTime value to a String value.

DateTime[] dates = { new DateTime(2009, 7, 14), 
                     new DateTime(1, 1, 1, 18, 32, 0), 
                     new DateTime(2009, 2, 12, 7, 16, 0) };
string result;

foreach (DateTime dateValue in dates)
{
   result = Convert.ToString(dateValue);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        dateValue.GetType().Name, dateValue,
                        result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the DateTime value 7/14/2009 12:00:00 AM to a String value 7/14/2009 12:00:00 AM.
//    Converted the DateTime value 1/1/0001 06:32:00 PM to a String value 1/1/0001 06:32:00 PM.
//    Converted the DateTime value 2/12/2009 07:16:00 AM to a String value 2/12/2009 07:16:00 AM.
Dim dates() As Date = { #07/14/2009#, #6:32PM#, #02/12/2009 7:16AM#}
Dim result As String

For Each dateValue As Date In dates
   result = Convert.ToString(dateValue)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        dateValue.GetType().Name, dateValue, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the DateTime value 7/14/2009 12:00:00 AM to a String value 7/14/2009 12:00:00 AM.
'    Converted the DateTime value 1/1/0001 06:32:00 PM to a String value 1/1/0001 06:32:00 PM.
'    Converted the DateTime value 2/12/2009 07:16:00 AM to a String value 2/12/2009 07:16:00 AM.

Remarques

Cette implémentation est identique à DateTime.ToString().This implementation is identical to DateTime.ToString(). Elle utilise les conventions de mise en forme de la culture actuelle et le spécificateur de format "G" pour DateTime convertir une valeur en sa représentation sous forme de chaîne.It uses the formatting conventions of the current culture and the "G" format specifier to convert a DateTime value to its string representation.

ToString(Int64) ToString(Int64) ToString(Int64) ToString(Int64)

Convertit la valeur de l'entier signé 64 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 64-bit signed integer to its equivalent string representation.

public:
 static System::String ^ ToString(long value);
public static string ToString (long value);
static member ToString : int64 -> string
Public Shared Function ToString (value As Long) As String

Paramètres

value
Int64 Int64 Int64 Int64

Entier signé 64 bits à convertir.The 64-bit signed integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers long en sa représentation sous forme de chaîne équivalente.The following example converts each element in a long integer array to its equivalent string representation.

// Create a NumberFormatInfo object and set several of its
// properties that control default integer formatting.
System.Globalization.NumberFormatInfo provider = new System.Globalization.NumberFormatInfo();
provider.NegativeSign = "minus ";

long[] values = { -200, 0, 1000 };

foreach (long value in values)
   Console.WriteLine("{0,-6}  -->  {1,10}", 
                     value, Convert.ToString(value, provider));
// The example displays the following output:
//       -200    -->   minus 200
//       0       -->           0
//       1000    -->        1000
' Create a NumberFormatInfo object and set several of its
' properties that control default integer formatting.
Dim provider As New System.Globalization.NumberFormatInfo()
provider.NegativeSign = "minus "

Dim values() As Long = { -200, 0, 1000 }

For Each value As Long In values
   Console.WriteLine("{0,-6}  -->  {1,10}", _
                     value, Convert.ToString(value, provider))
Next
' The example displays the following output:
'       -200    -->   minus 200
'       0       -->           0
'       1000    -->        1000

Remarques

Cette implémentation est identique à Int64.ToString().This implementation is identical to Int64.ToString().

ToString(Object) ToString(Object) ToString(Object) ToString(Object)

Convertit la valeur de l'objet spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified object to its equivalent string representation.

public:
 static System::String ^ ToString(System::Object ^ value);
public static string ToString (object value);
static member ToString : obj -> string
Public Shared Function ToString (value As Object) As String

Paramètres

value
Object Object Object Object

Objet qui fournit la valeur à convertir, ou null.An object that supplies the value to convert, or null.

Retours

Représentation sous forme de chaîne de value ou Empty si value est null.The string representation of value, or Empty if value is null.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’objets en sa représentation sous forme de chaîne équivalente.The following example converts each element in an object array to its equivalent string representation.

object[] values = { false, 12.63m, new DateTime(2009, 6, 1, 6, 32, 15), 16.09e-12,
                    'Z', 15.15322, SByte.MinValue, Int32.MaxValue };
string result;

foreach (object value in values)
{
   result = Convert.ToString(value);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Boolean value False to the String value False.
//    Converted the Decimal value 12.63 to the String value 12.63.
//    Converted the DateTime value 6/1/2009 06:32:15 AM to the String value 6/1/2009 06:32:15 AM.
//    Converted the Double value 1.609E-11 to the String value 1.609E-11.
//    Converted the Char value Z to the String value Z.
//    Converted the Double value 15.15322 to the String value 15.15322.
//    Converted the SByte value -128 to the String value -128.
//    Converted the Int32 value 2147483647 to the String value 2147483647.      
Dim values() As Object = { False, 12.63d, #06/01/2009 6:32:15#, 16.09e-12, _
                           "Z"c, 15.15322, SByte.MinValue, Int32.MaxValue}
Dim result As String

For Each value As Object In values
   result = Convert.ToString(value)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Boolean value False to the String value False.
'    Converted the Decimal value 12.63 to the String value 12.63.
'    Converted the DateTime value 6/1/2009 06:32:15 AM to the String value 6/1/2009 06:32:15 AM.
'    Converted the Double value 1.609E-11 to the String value 1.609E-11.
'    Converted the Char value Z to the String value Z.
'    Converted the Double value 15.15322 to the String value 15.15322.
'    Converted the SByte value -128 to the String value -128.
'    Converted the Int32 value 2147483647 to the String value 2147483647.      

Remarques

Pour convertir value en sa représentation sous forme de chaîne, la méthode tente IConvertible.ToString d’appeler valuel’implémentation de.To convert value to its string representation, the method tries to call the IConvertible.ToString implementation of value. Si value n’implémente pas IConvertible l’interface, la méthode tente d’appeler IFormattable.ToString l’implémentation valuede.If value does not implement the IConvertible interface, the method tries to call the IFormattable.ToString implementation of value. Si la valeur n’implémente IFormattable pas l’interface, la méthode ToString appelle la méthode du type sous value-jacent de.If value does not implement the IFormattable interface, the method calls the ToString method of the underlying type of value.

ToString(SByte) ToString(SByte) ToString(SByte) ToString(SByte)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier signé 8 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 8-bit signed integer to its equivalent string representation.

public:
 static System::String ^ ToString(System::SByte value);
[System.CLSCompliant(false)]
public static string ToString (sbyte value);
static member ToString : sbyte -> string
Public Shared Function ToString (value As SByte) As String

Paramètres

value
SByte SByte SByte SByte

Entier signé 8 bits à convertir.The 8-bit signed integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’octets signé en sa représentation sous forme de chaîne équivalente.The following example converts each element in a signed byte array to its equivalent string representation.

sbyte[] numbers = { SByte.MinValue, -12, 0, 16, SByte.MaxValue };
string result;

foreach (sbyte number in numbers)
{
   result = Convert.ToString(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the SByte value -128 to the String value -128.
//    Converted the SByte value -12 to the String value -12.
//    Converted the SByte value 0 to the String value 0.
//    Converted the SByte value 16 to the String value 16.
//    Converted the SByte value 127 to the String value 127.
Dim numbers() As SByte = { SByte.MinValue, -12, 0, 16, SByte.MaxValue }
Dim result As String

For Each number As SByte In numbers
   result = Convert.ToString(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the SByte value -128 to the String value -128.
'    Converted the SByte value -12 to the String value -12.
'    Converted the SByte value 0 to the String value 0.
'    Converted the SByte value 16 to the String value 16.
'    Converted the SByte value 127 to the String value 127.

Remarques

Cette implémentation est identique à SByte.ToString().This implementation is identical to SByte.ToString().

ToString(Single) ToString(Single) ToString(Single) ToString(Single)

Convertit la valeur du nombre à virgule flottante simple précision spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified single-precision floating-point number to its equivalent string representation.

public:
 static System::String ^ ToString(float value);
public static string ToString (float value);
static member ToString : single -> string
Public Shared Function ToString (value As Single) As String

Paramètres

value
Single Single Single Single

Nombre à virgule flottante simple précision à convertir.The single-precision floating-point number to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau Single de valeurs en sa représentation sous forme de chaîne équivalente.The following example converts each element in an array of Single values to its equivalent string representation.

float[] numbers = { Single.MinValue, -1011.351f, -17.45f, -3e-16f,
                    0f, 4.56e-12f, 16.0001f, 10345.1221f, Single.MaxValue };
string result;

foreach (float number in numbers)
{
   result = Convert.ToString(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
}                            
// The example displays the following output:
//    Converted the Single value -3.402823E+38 to the String value -3.402823E+38.
//    Converted the Single value -1011.351 to the String value -1011.351.
//    Converted the Single value -17.45 to the String value -17.45.
//    Converted the Single value -3E-16 to the String value -3E-16.
//    Converted the Single value 0 to the String value 0.
//    Converted the Single value 4.56E-12 to the String value 4.56E-12.
//    Converted the Single value 16.0001 to the String value 16.0001.
//    Converted the Single value 10345.12 to the String value 10345.12.
//    Converted the Single value 3.402823E+38 to the String value 3.402823E+38.
Dim numbers() As Single = { Single.MinValue, -1011.351, -17.45, -3e-16, _
                            0, 4.56e-12, 16.0001, 10345.1221, Single.MaxValue }
Dim result As String

For Each number As Single In numbers
   result = Convert.ToString(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next                            
' The example displays the following output:
'    Converted the Single value -3.402823E+38 to the String value -3.402823E+38.
'    Converted the Single value -1011.351 to the String value -1011.351.
'    Converted the Single value -17.45 to the String value -17.45.
'    Converted the Single value -3E-16 to the String value -3E-16.
'    Converted the Single value 0 to the String value 0.
'    Converted the Single value 4.56E-12 to the String value 4.56E-12.
'    Converted the Single value 16.0001 to the String value 16.0001.
'    Converted the Single value 10345.12 to the String value 10345.12.
'    Converted the Single value 3.402823E+38 to the String value 3.402823E+38.

Remarques

Cette implémentation est identique à Single.ToString().This implementation is identical to Single.ToString().

ToString(String) ToString(String) ToString(String) ToString(String)

Retourne l'instance de chaîne spécifiée. Aucune conversion n'est effectuée.Returns the specified string instance; no actual conversion is performed.

public:
 static System::String ^ ToString(System::String ^ value);
public static string ToString (string value);
static member ToString : string -> string
Public Shared Function ToString (value As String) As String

Paramètres

value
String String String String

Chaîne à retourner.The string to return.

Retours

value est retourné sans modification.value is returned unchanged.

Exemples

L’exemple suivant passe une chaîne à la ToString(String) méthode et appelle la Object.ReferenceEquals méthode pour confirmer que la méthode retourne la chaîne d’origine.The following example passes a string to the ToString(String) method and calls the Object.ReferenceEquals method to confirm that the method returns the original string. L’exemple appelle également la String.IsInterned méthode pour s’assurer que les deux chaînes ne sont pas identiques, car la chaîne d’origine est internée.The example also calls the String.IsInterned method to ensure that the two strings are not identical because the original string is interned.

using System;

public class Example
{
   public static void Main()
   {
      String article = "An";
      String noun = "apple";
      String str1 = String.Format("{0} {1}", article, noun);
      String str2 = Convert.ToString(str1);

      Console.WriteLine("str1 is interned: {0}",
                        ! (String.IsInterned(str1) == null));
      Console.WriteLine("str1 and str2 are the same reference: {0}",
                        Object.ReferenceEquals(str1, str2));
   }
}
// The example displays the following output:
//       str1 is interned: False
//       str1 and str2 are the same reference: True
Module Example
   Public Sub Main()
      Dim article As String = "An"
      Dim noun As String = "apple"
      Dim str1 As String = String.Format("{0} {1}", article, noun)
      Dim str2 As String = Convert.ToString(str1)

      Console.WriteLine("str1 is interned: {0}",
                        Not String.IsInterned(str1) Is Nothing)
      Console.WriteLine("str1 and str2 are the same reference: {0}",
                        Object.ReferenceEquals(str1, str2))
   End Sub
End Module
' The example displays the following output:
'       str1 is interned: False
'       str1 and str2 are the same reference: True

ToString(UInt16) ToString(UInt16) ToString(UInt16) ToString(UInt16)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 16 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 16-bit unsigned integer to its equivalent string representation.

public:
 static System::String ^ ToString(System::UInt16 value);
[System.CLSCompliant(false)]
public static string ToString (ushort value);
static member ToString : uint16 -> string
Public Shared Function ToString (value As UShort) As String

Paramètres

value
UInt16 UInt16 UInt16 UInt16

Entier non signé 16 bits à convertir.The 16-bit unsigned integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau de valeurs entières 16 bits non signées en sa représentation sous forme de chaîne équivalente.The following example converts each element in an array of unsigned 16-bit integer values to its equivalent string representation.

ushort[] numbers = { UInt16.MinValue, 103, 1045, UInt16.MaxValue };
string result;

foreach (ushort number in numbers)
{
   result = Convert.ToString(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt16 value 0 to the String value 0.
//    Converted the UInt16 value 103 to the String value 103.
//    Converted the UInt16 value 1045 to the String value 1045.
//    Converted the UInt16 value 65535 to the String value 65535.
Dim numbers() As UShort = { UInt16.MinValue, 103, 1045, UInt16.MaxValue }
Dim result As String

For Each number As UShort In numbers
   result = Convert.ToString(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt16 value 0 to the String value 0.
'    Converted the UInt16 value 103 to the String value 103.
'    Converted the UInt16 value 1045 to the String value 1045.
'    Converted the UInt16 value 65535 to the String value 65535.

Remarques

Cette implémentation est identique à UInt16.ToString().This implementation is identical to UInt16.ToString().

ToString(UInt32) ToString(UInt32) ToString(UInt32) ToString(UInt32)

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 32-bit unsigned integer to its equivalent string representation.

public:
 static System::String ^ ToString(System::UInt32 value);
[System.CLSCompliant(false)]
public static string ToString (uint value);
static member ToString : uint32 -> string
Public Shared Function ToString (value As UInteger) As String

Paramètres

value
UInt32 UInt32 UInt32 UInt32

Entier non signé 32 bits à convertir.The 32-bit unsigned integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers non signé en sa représentation sous forme de chaîne équivalente.The following example converts each element in an unsigned integer array to its equivalent string representation.

uint[] numbers = { UInt32.MinValue, 103, 1045, 119543, UInt32.MaxValue };
string result;

foreach (uint number in numbers)
{
   result = Convert.ToString(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt32 value 0 to the String value 0.
//    Converted the UInt32 value 103 to the String value 103.
//    Converted the UInt32 value 1045 to the String value 1045.
//    Converted the UInt32 value 119543 to the String value 119543.
//    Converted the UInt32 value 4294967295 to the String value 4294967295.
Dim numbers() As UInteger = { UInt32.MinValue, 103, 1045, 119543, UInt32.MaxValue }
Dim result As String

For Each number As UInteger In numbers
   result = Convert.ToString(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt32 value 0 to the String value 0.
'    Converted the UInt32 value 103 to the String value 103.
'    Converted the UInt32 value 1045 to the String value 1045.
'    Converted the UInt32 value 119543 to the String value 119543.
'    Converted the UInt32 value 4294967295 to the String value 4294967295.

Remarques

Cette implémentation est identique à UInt32.ToString().This implementation is identical to UInt32.ToString().

ToString(Int32) ToString(Int32) ToString(Int32) ToString(Int32)

Convertit la valeur de l'entier signé 32 bits spécifié en sa représentation sous forme de chaîne équivalente.Converts the value of the specified 32-bit signed integer to its equivalent string representation.

public:
 static System::String ^ ToString(int value);
public static string ToString (int value);
static member ToString : int -> string
Public Shared Function ToString (value As Integer) As String

Paramètres

value
Int32 Int32 Int32 Int32

Entier signé 32 bits à convertir.The 32-bit signed integer to convert.

Retours

Représentation sous forme de chaîne de value.The string representation of value.

Exemples

L’exemple suivant compare la ToString(Int32) méthode à la ToString(UInt16, IFormatProvider) méthode.The following example compares the ToString(Int32) method with the ToString(UInt16, IFormatProvider) method. Il définit un objet NumberFormatInfo personnalisé qui utilise la forme « moins » pour représenter le signe négatif.It defines a custom NumberFormatInfo object that uses the sting "minus" to represent the negative sign. Il convertit chaque élément d’un tableau d’entiers en sa représentation sous forme de chaîne équivalente à l’aide de la mise en forme par défaut (les conventions de mise en forme de la culture actuelle) et du fournisseur de format personnalisé.It converts each element in an integer array to its equivalent string representation using default formatting (the formatting conventions of the current culture) and the custom format provider.

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Create a NumberFormatInfo object and set its NegativeSigns
      // property to use for integer formatting.
      NumberFormatInfo provider = new NumberFormatInfo();
      provider.NegativeSign = "minus ";

      int[] values = { -20, 0, 100 };
      
      Console.WriteLine("{0,-8} --> {1,10} {2,10}\n", "Value",
                         CultureInfo.CurrentCulture.Name,
                         "Custom");
      foreach (int value in values)
         Console.WriteLine("{0,-8} --> {1,10} {2,10}",
                           value, Convert.ToString(value),
                           Convert.ToString(value, provider));
      // The example displays output like the following:
      //       Value    -->      en-US     Custom
      //
      //       -20      -->        -20   minus 20
      //       0        -->          0          0
      //       100      -->        100        100
Imports System.Globalization

Module Example
   Public Sub Main()
      ' Create a NumberFormatInfo object and set its NegativeSigns
      ' property to use for integer formatting.
      Dim provider As New NumberFormatInfo()
      provider.NegativeSign = "minus "

      Dim values() As Integer = { -20, 0, 100 }

      Console.WriteLine("{0,-8} --> {1,10} {2,10}", "Value",
                         CultureInfo.CurrentCulture.Name,
                         "Custom")
      Console.WriteLine()
      For Each value As Integer In values
         Console.WriteLine("{0,-8} --> {1,10} {2,10}",
                           value, Convert.ToString(value),
                           Convert.ToString(value, provider))
      Next
   End Sub
End Module
' The example displays output like the following:
'       Value    -->      en-US     Custom
'
'       -20      -->        -20   minus 20
'       0        -->          0          0
'       100      -->        100        100

Remarques

Cette implémentation est identique à Int32.ToString().This implementation is identical to Int32.ToString(). Elle est mise en forme àl’aidedesconventionsdemiseenformedelacultureactuelleduthread.valueIt formats value by using the formatting conventions of the current thread culture.

S’applique à